Shulou(Shulou.com)06/03 Report--

Editor to share with you what JavaScript tool functions are, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Add the on method Element.prototype.Element.prototype.addEventListener to the element

NodeList.prototype. (event, fn) {

[] ['forEach'] .call (this, function (el) {

El.on (event, fn)

});

Return this

}

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Add the trigger method Element.prototype.trigger = function (type, data) {for the element

Var event = document.createEvent ("HTMLEvents")

Event.initEvent (type, true, true)

Event.data = data | | {}

Event.eventName = type

Event.target = this

This.dispatchEvent (event)

Return this

}

NodeList.prototype.trigger = function (event) {

[] ["forEach"] .call (this, function (el) {

El ["trigger"] (event)

});

Return this

}; escape html tag function HtmlEncode (text) {

Return text

.replace (/ & / g, "&")

.replace (/\ "/ g,'"')

.replace (/ / g, ">")

} HTML tag escape / / HTML tag escape

/ / @ param {Array.} tokens of templateData string type

/ / @ param {...}.. the result of the operation of the placeholder of the vals expression tokens

/ /

Function SaferHTML (templateData) {

Var s = templateData [0]

For (var I = 1; I

< arguments.length; i++) { var arg = String(arguments[i]); // Escape special characters in the substitution. s += arg .replace(/&/g, "&") .replace(//g, ">

")

/ / Don't escape special characters in the template.

S + = templateData [I]

}

Return s

}

/ / call

Var html = SaferHTML`

This is an introduction to string templates.

`; bind events across browsers

Function addEventSamp (obj, evt, fn) {

If (! oTarget) {

Return

}

If (obj.addEventListener) {

Obj.addEventListener (evt, fn, false)

} else if (obj.attachEvent) {

Obj.attachEvent ("on" + evt, fn)

} else {

OTarget ["on" + sEvtType] = fn

}

} add favorites

Function addFavorite (sURL, sTitle) {

Try {

Window.external.addFavorite (sURL, sTitle)

} catch (e) {

Try {

Window.sidebar.addPanel (sTitle, sURL, "")

} catch (e) {

Alert ("failed to add favorites, please use Ctrl+D to add")

}

}

} extract all URLs from the page code var aa = document.documentElement.outerHTML

.match (

/ (url\ (| src= | href=) [\ "\] * ([^\"\'\ (\)\\ []] +) [\ "\'\)] * | (http:\ /\ / [\ w\ -\.] +) / gi

)

.join ("\ r\ n")

.replace (/ ^ (src= | href= | url\) [\ "\'] * | [\"\'\ >\)] * $/ gim, "")

Alert (aa); dynamically load script files function appendscript (src, text, reload, charset) {

Var id = hash (src + text)

If (! reload & & in_array (id, evalscripts)) return

If (reload & & $(id)) {

$(id) [xss_clean] .removeChild ($(id))

}

Evalscripts.push (id)

Var scriptNode = document.createElement ("script")

ScriptNode.type = "text/javascript"

ScriptNode.id = id

ScriptNode.charset = charset

? Charset

: BROWSER.firefox

? Document.characterSet

: document.charset

Try {

If (src) {

ScriptNode.src = src

ScriptNode.false

ScriptNode. {

ScriptNode.true

JSLOADED [src] = 1

}

ScriptNode. {

If (

(scriptNode.readyState = = "loaded" | |

ScriptNode.readyState = = "complete") & &

! scriptNode.onloadDone

) {

ScriptNode.true

JSLOADED [src] = 1

}

}

} else if (text) {

ScriptNode.text = text

}

Document.getElementsByTagName ("head") [0] .appendChild (scriptNode)

} catch (e) {}

} return to the top general method function backTop (btnId) {

Var btn = document.getElementById (btnId)

Var d = document.documentElement

Var b = document.body

Window.set

Btn.style.display = "none"

Btn. {

Btn.style.display = "none"

Window.null

This.timer = setInterval (function () {

D.scrollTop-= Math.ceil ((d.scrollTop + b.scrollTop) * 0.1)

B.scrollTop-= Math.ceil ((d.scrollTop + b.scrollTop) * 0.1)

If (d.scrollTop + b.scrollTop = = 0)

ClearInterval (btn.timer, (window.set))

}, 10)

}

Function set () {

Btn.style.display = d.scrollTop + b.scrollTop > 100? "block": "none"

}

}

BackTop ("goTop"); implement base64 decoding

Function base64_decode (data) {

Var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="

Var o1

O2

O3

H2

H3

H4

H5

Bits

I = 0

Ac = 0

Dec = ""

Tmp_arr = []

If (! data) {

Return data

}

Data + = ""

Do {

H2 = b64.indexOf (data.charAt (iTunes +))

H3 = b64.indexOf (data.charAt (iTunes +))

H4 = b64.indexOf (data.charAt (iTunes +))

H5 = b64.indexOf (data.charAt (iTunes +))

Bits = (H2 > 8) & 0xff

O3 = bits & 0xff

If (h4 = = 64) {

Tmp_ ARR [ac + +] = String.fromCharCode (o1)

} else if (h5 = = 64) {

Tmp_ ARR [ac + +] = String.fromCharCode (o1, O2)

} else {

Tmp_ arr [ac + +] = String.fromCharCode (o1, o2, o3)

}

} while (I

< data.length); dec = tmp_arr.join(""); dec = utf8_decode(dec); return dec; }确认是否是键盘有效输入值function checkKey(iKey) { if (iKey == 32 || iKey == 229) { return true; } /*空格和异常*/ if (iKey >

47 & & iKey

< 58) { return true; } /*数字*/ if (iKey >

64 & & iKey

< 91) { return true; } /*字母*/ if (iKey >

95 & & iKey

< 108) { return true; } /*数字键盘1*/ if (iKey >

108 & & iKey

< 112) { return true; } /*数字键盘2*/ if (iKey >

185 & & iKey

< 193) { return true; } /*符号1*/ if (iKey >

218 & & iKey

< 223) { return true; } /*符号2*/ return false; }全角半角转换//iCase: 0全到半，1半到全，其他不转化 function chgCase(sStr, iCase) { if ( typeof sStr != "string" || sStr.length 全*/ for (i = 0; i < sStr.length; i += 1) { iCode = sStr.charCodeAt(i); if (iCode == 32) { iCode = 12288; } else if (iCode < 127) { iCode += 65248; } oRs.push(String.fromCharCode(iCode)); } } else { /*全->

Half * /

For (I = 0; I)

< sStr.length; i += 1) { iCode = sStr.charCodeAt(i); if (iCode == 12288) { iCode = 32; } else if (iCode >

65280 & & iCode

< 65375) { iCode -= 65248; } oRs.push(String.fromCharCode(iCode)); } } return oRs.join(""); }版本对比function compareVersion(v1, v2) { v1 = v1.split("."); v2 = v2.split("."); var len = Math.max(v1.length, v2.length); while (v1.length < len) { v1.push("0"); } while (v2.length < len) { v2.push("0"); } for (var i = 0; i < len; i++) { var num1 = parseInt(v1[i]); var num2 = parseInt(v2[i]); if (num1 >

Num2) {

Return 1

} else if (num1

< num2) { return -1; } } return 0; }压缩CSS样式代码function compressCss(s) { //压缩代码 s = s.replace(/\/\*(.|\n)*?\*\//g, ""); //删除注释 s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1"); s = s.replace(/\,[\s\.\#\d]*\{/g, "{"); //容错处理 s = s.replace(/;\s*;/g, ";"); //清除连续分号 s = s.match(/^\s*(\S+(\s+\S+)*)\s*$/); //去掉首尾空白 return s == null ? "" : s[1]; }获取当前路径var currentPageUrl = ""; if (typeof this.href === "undefined") { currentPageUrl = _document.location.toString().toLowerCase(); } else { currentPageUrl = this.href.toString().toLowerCase(); }字符串长度截取function cutstr(str, len) { var temp, icount = 0, patrn = /[^\\x00-\\xff]/， strre = ""; for (var i = 0; i < str.length; i++) { if (icount < len - 1) { temp = str.substr(i, 1); if (patrn.exec(temp) == null) { icount = icount + 1 } else { icount = icount + 2 } strre += temp } else { break; } } return strre + "..." }时间日期格式转换Date.prototype.format = function(formatStr) { var str = formatStr; var Week = ["日", "一", "二", "三", "四", "五", "六"]; str = str.replace(/yyyy|YYYY/, this.getFullYear()); str = str.replace( /yy|YY/, this.getYear() % 100 >

nine

? (this.getYear () 100) .toString ()

: "0" + (this.getYear ()% 100)

);

Str = str.replace (

/ MM/

This.getMonth () + 1 > 9

? (this.getMonth () + 1) .toString ()

: "0" + (this.getMonth () + 1)

);

Str = str.replace (/ MCompg, this.getMonth () + 1)

Str = str.replace (/ w | Wamp g, Week [this.getDay ()])

Str = str.replace (

/ dd | DD/

This.getDate () > 9? This.getDate () .toString (): "0" + this.getDate ()

);

Str = str.replace (/ d | Dramp g, this.getDate ())

Str = str.replace (

/ hh | HH/

This.getHours () > 9? This.getHours () .toString (): "0" + this.getHours ()

);

Str = str.replace (/ h | Hram g, this.getHours ())

Str = str.replace (

/ mm/

This.getMinutes () > 9

? This.getMinutes () .toString ()

: "0" + this.getMinutes ()

);

Str = str.replace (/ mbank g, this.getMinutes ())

Str = str.replace (

/ ss | SS/

This.getSeconds () > 9

? This.getSeconds () .toString ()

: "0" + this.getSeconds ()

);

Str = str.replace (/ s | Sstroke g, this.getSeconds ())

Return str

}

/ / or

Date.prototype.format = function (format) {

Var o = {

"M +": this.getMonth () + 1, / / month

"d +": this.getDate (), / / day

"h +": this.getHours (), / / hour

"m +": this.getMinutes (), / / minute

"s +": this.getSeconds (), / / second

"Q +": Math.floor ((this.getMonth () + 3) / 3), / / quarter

S: this.getMilliseconds () / / millisecond

}

If (/ (y +) / .test (format))

Format = format.replace (

RegExp.$1

(this.getFullYear () + ") .substr (4-RegExp.$1.length)

);

For (var k in o) {

If (new RegExp ("(" + k + ")") .test (format))

Format = format.replace (

RegExp.$1

RegExp.$1.length = = 1? O [k]: ("00" + o [k]) .length (("" + o [k]) .length)

);

}

Return format

}

Alert (new Date (). Format ("yyyy-MM-dd hh:mm:ss")); Cross-browser delete event function delEvt (obj, evt, fn) {

If (! obj) {

Return

}

If (obj.addEventListener) {

Obj.addEventListener (evt, fn, false)

} else if (oTarget.attachEvent) {

Obj.attachEvent ("on" + evt, fn)

} else {

Obj ["on" + evt] = fn

}

} determine whether to end with a string String.prototype.endWith = function (s) {

Var d = this.length-s.length

Return d > = 0 & & this.lastIndexOf (s) = = d

}; return script content function evalscript (s) {

If (s.indexOf ("] *?)\" [^\ >] *? (reload=\ "1\")? (?: charset=\ "([\ w\ -] +?)\")? > / I

Var arr1 = []

Arr1 = p1.exec (arr [0])

If (arr1) {

Appendscript (arr1 [1], ", arr1 [2], arr1 [3])

} else {

P1 = / ([^\ x00] +?) / I

Arr1 = p1.exec (arr [0])

Appendscript ("", arr1 [2], arr1 [1] .indexOf ("reload=")! =-1)

}

}

Return s

} format CSS style code function formatCss (s) {

/ / format code

S = s.replace (/\ s * ([\ {}\:\;\,]), "$1")

S = s.replace (/;\ saccountAccord g, ";"); / / clear the consecutive semicolon

S = s.replace (/\, [\ s\.\ #\ d] * {/ g, "{")

S = s.replace (/ ([^\ s]))\ {([^\ s]) / g, "$1 {\ n\ tasking 2")

S = s.replace (/ ([^\ s])\} ([^\ n] *) / g, "$1\ n}\ nNo.2")

S = s.replace (/ ([^\ s]); ([^\ s\}]) / g, "$1;\ n\ tasking 2")

Return s

} get the cookie value function getCookie (name) {

Var arr = [xss_clean] .match (new RegExp ("(^ |)" + name + "= ([^;] *) (; | $")

If (arr! = null) return unescape (arr [2])

Return null

} get the parameter value of GET in URL / / usage: if the address is test.htm?t1=1&t2=2&t3=3, you can get: GET ["T1"], GET ["T2"], GET ["T3"]

Function getGet () {

Querystr = _ window.location.href.split (?)

If (querystr [1]) {

GETs = querystr [1] .split ("&")

GET = []

For (I = 0; I)

< GETs.length; i++) { tmp_arr = GETs.split("="); key = tmp_arr[0]; GET[key] = tmp_arr[1]; } } return querystr[1]; }获取移动设备初始化大小function getInitZoom() { if (!this._initZoom) { var screenWidth = Math.min(screen.height, screen.width); if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) { screenWidth = screenWidth / window.devicePixelRatio; } this._initZoom = screenWidth / document.body.offsetWidth; } return this._initZoom; }获取页面高度function getPageHeight() { var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat" ? a : g.documentElement; return Math.max(f.scrollHeight, a.scrollHeight, d.clientHeight); }获取页面scrollLeftfunction getPageScrollLeft() { var a = document; return a.documentElement.scrollLeft || a.body.scrollLeft; }获取页面scrollTopfunction getPageScrollTop() { var a = document; return a.documentElement.scrollTop || a.body.scrollTop; }获取页面可视高度function getPageViewHeight() { var d = document, a = d.compatMode == "BackCompat" ? d.body : d.documentElement; return a.clientHeight; }获取页面可视宽度function getPageViewWidth() { var d = document, a = d.compatMode == "BackCompat" ? d.body : d.documentElement; return a.clientWidth; }获取页面宽度function getPageWidth() { var g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat" ? a : g.documentElement; return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth); }获取移动设备屏幕宽度function getScreenWidth() { var smallerSide = Math.min(screen.width, screen.height); var fixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport; var fixViewPortsExperimentRunning = fixViewPortsExperiment && fixViewPortsExperiment.toLowerCase() === "new"; if (fixViewPortsExperiment) { if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) { smallerSide = smallerSide / window.devicePixelRatio; } } return smallerSide; }获取网页被卷去的位置function getScrollXY() { return document.body.scrollTop ? { x: document.body.scrollLeft, y: document.body.scrollTop } : { x: document.documentElement.scrollLeft, y: document.documentElement.scrollTop }; }获取URL上的参数// 获取URL中的某参数值,不区分大小写 // 获取URL中的某参数值,不区分大小写, // 默认是取'hash'里的参数， // 如果传其他参数支持取'search'中的参数 // @param {String} name 参数名称 export function getUrlParam(name, type = "hash") { let newName = name, reg = new RegExp("(^|&)" + newName + "=([^&]*)(&|$)", "i"), paramHash = _window.location.hash.split("?")[1] || "", paramSearch = _window.location.search.split("?")[1] || "", param; type === "hash" ? (param = paramHash) : (param = paramSearch); let result = param.match(reg); if (result != null) { return result[2].split("/")[0]; } return null; }检验URL链接是否有效function getUrlState(URL) { var xmlhttp = new ActiveXObject("microsoft.xmlhttp"); xmlhttp.Open("GET", URL, false); try { xmlhttp.Send(); } catch (e) { } finally { var result = xmlhttp.responseText; if (result) { if (xmlhttp.Status == 200) { return true; } else { return false; } } else { return false; } } }获取窗体可见范围的宽与高function getViewSize() { var de = document.documentElement; var db = document.body; var viewW = de.clientWidth == 0 ? db.clientWidth : de.clientWidth; var viewH = de.clientHeight == 0 ? db.clientHeight : de.clientHeight; return Array(viewW, viewH); }获取移动设备最大化大小function getZoom() { var screenWidth = Math.abs(window.orientation) === 90 ? Math.max(screen.height, screen.width) : Math.min(screen.height, screen.width); if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) { screenWidth = screenWidth / window.devicePixelRatio; } var FixViewPortsExperiment = rendererModel.runningExperiments.FixViewport || rendererModel.runningExperiments.fixviewport; var FixViewPortsExperimentRunning = FixViewPortsExperiment && (FixViewPortsExperiment === "New" || FixViewPortsExperiment === "new"); if (FixViewPortsExperimentRunning) { return screenWidth / window.innerWidth; } else { return screenWidth / document.body.offsetWidth; } }判断是否安卓移动设备访问function isAndroidMobileDevice() { return /android/i.test(navigator.userAgent.toLowerCase()); }判断是否苹果移动设备访问function isAppleMobileDevice() { return /iphone|ipod|ipad|Macintosh/i.test(navigator.userAgent.toLowerCase()); }判断是否为数字类型function isDigit(value) { var patrn = /^[0-9]*$/; if (patrn.exec(value) == null || value == "") { return false; } else { return true; } }是否是某类手机型号// 用devicePixelRatio和分辨率判断 const isIphonex = () =>

{

/ / X XS, XS Max, XR

Const xSeriesConfig = [

{

DevicePixelRatio: 3

Width: 375

Height: 812

}

{

DevicePixelRatio: 3

Width: 414

Height: 896

}

{

DevicePixelRatio: 2

Width: 414

Height: 896

}

]

/ / h6

If (typeof window! = = "undefined" & & window) {

Const isIOS = / iphone/gi.test (window.navigator.userAgent)

If (! isIOS) return false

Const {devicePixelRatio, screen} = window

Const {width, height} = screen

Return xSeriesConfig.some (

Item = >

Item.devicePixelRatio = = devicePixelRatio & &

Item.width = = width & &

Item.height = height

);

}

Return false

}; determine whether the mobile device function isMobile () {

If (typeof this._isMobile = = "boolean") {

Return this._isMobile

}

Var screenWidth = this.getScreenWidth ()

Var fixViewPortsExperiment =

RendererModel.runningExperiments.FixViewport | |

RendererModel.runningExperiments.fixviewport

Var fixViewPortsExperimentRunning =

FixViewPortsExperiment & & fixViewPortsExperiment.toLowerCase () = = "new"

If (! fixViewPortsExperiment) {

If (! this.isAppleMobileDevice ()) {

ScreenWidth = screenWidth / window.devicePixelRatio

}

}

Var isMobileScreenSize = screenWidth

< 600; var isMobileUserAgent = false; this._isMobile = isMobileScreenSize && this.isTouchScreen(); return this._isMobile; }判断吗是否手机号码function isMobileNumber(e) { var i = "134,135,136,137,138,139,150,151,152,157,158,159,187,188,147,182,183,184,178", n = "130,131,132,155,156,185,186,145,176", a = "133,153,180,181,189,177,173,170", o = e || "", r = o.substring(0, 3), d = o.substring(0, 4), s = !!/^1\d{10}$/.test(o) && (n.indexOf(r) >

= 0

? China Unicom

: a.indexOf (r) > = 0

? "Telecom"

: "1349" = d

? "Telecom"

: i.indexOf (r) > = 0

? "move"

"unknown")

Return s

} determine whether a mobile device accesses function isMobileUserAgent () {

Return / iphone | ipod | android.*mobile | windows.*phone | blackberry.*mobile/i.test (

Window.navigator.userAgent.toLowerCase ()

);

} determine whether the mouse is removed from the event function isMouseOut (e, handler) {

If (e.type! = = "mouseout") {

Return false

}

Var reltg = e.relatedTarget

? E.relatedTarget

: e.type = = "mouseout"

? E.toElement

: e.fromElement

While (reltg & & reltg! = = handler) {

Reltg = reltg [XSS _ clean]

}

Return reltg! = = handler

} determine whether to Touch the screen function isTouchScreen () {

Return (

"ontouchstart" in window | |

(window.DocumentTouch & & document instanceof DocumentTouch)

);

} determine whether it is a URL or not

Function isURL (strUrl) {

Var regular = / ^\ b (https? | ftp):\ /\ /)? [- a-z0-9] + (\. [- a-z0-9] +) *\. (?: com | edu | gov | mil | net | org | info | name | museum | asia | coop | aero | [aMusz] [aMaiz] | (25 [0-5]) | (2 [0-4]\ d) | (1\ d) | ([1-9]\ d) |\ d)\ b (\ / [- a-z0-9):\ @ &? = +) .!\ /%\ $] *) $/ I

If (regular.test (strUrl)) {

Return true

} else {

Return false

}

} determine whether to open the window function isViewportOpen () {

Return! document.getElementById ("wixMobileViewport")

} load style file function loadStyle (url) {

Try {

Document.createStyleSheet (url)

} catch (e) {

Var cssLink = document.createElement ("link")

CssLink.rel = "stylesheet"

CssLink.type = "text/css"

CssLink.href = url

Var head = document.getElementsByTagName ("head") [0]

Head.appendChild (cssLink)

}

} replace address bar function locationReplace (url) {

If (history.replaceState) {

History.replaceState (null, document.title, url)

History.go (0)

} else {

Location.replace (url)

}

} resolve offsetX compatibility issues / / offsetX/Y is not supported for Firefox

Function getOffset (e) {

Var target = e.target, / / the target object currently triggered

EventCoord

PageCoord

OffsetCoord

/ / calculate the distance from the current trigger element to the document

PageCoord = getPageCoord (target)

/ / calculate the distance from the cursor to the document

EventCoord = {

X: window.pageXOffset + e.clientX

Y: window.pageYOffset + e.clientY

}

/ / subtract to get the coordinates of the cursor to the first positioned parent element

OffsetCoord = {

X: eventCoord.X-pageCoord.X

Y: eventCoord.Y-pageCoord.Y

}

Return offsetCoord

}

Function getPageCoord (element) {

Var coord = {X: 0, Y: 0}

/ / calculate from the current trigger element to the root node

/ / Sum of offsetLeft or offsetTop values of offsetParent elements at all levels

While (element) {

Coord.X + = element.offsetLeft

Coord.Y + = element.offsetTop

Element = element.offsetParent

}

Return coord

} Open a common form method function openWindow (url, windowName, width, height) {

Var x = parseInt (screen.width / 2.0)-width / 2.0

Var y = parseInt (screen.height / 2.0)-height / 2.0

Var isMSIE = navigator.appName = = "Microsoft Internet Explorer"

If (isMSIE) {

Var p = "resizable=1,location=no,scrollbars=no,width="

P = p + width

P = p + ", height="

P = p + height

P = p + ", left="

P = p + x

P = p + ", top="

P = p + y

Retval = window.open (url, windowName, p)

} else {

Var win = window.open (

Url

"ZyiisPopup"

"top=" +

Y +

", left=" +

X +

", scrollbars=" +

Scrollbars +

", dialog=yes,modal=yes,width=" +

Width +

", height=" +

Height +

"resizable=no"

);

Eval ("try {win.resizeTo (width, height);} catch (e) {}")

Win.focus ()

}

} splice key-value pairs into URL with the parameter export default const fnParams2Url = obj= > {

Let aUrl = []

Let fnAdd = function (key, value) {

Return key +'='+ value

}

For (var k in obj) {

AUrl.push (fnAdd (k, OBJ [k]))

}

Return encodeURIComponent (aUrl.join ('&')

} remove the url prefix function removeUrlPrefix (a) {

A = a

.replace (/: / g, ":")

.replace (/. / g, ".")

.replace (/ / g, "/")

While (

Trim (a)

.toLowerCase ()

.indexOf ("http://") = = 0"

) {

A = trim (a.replace (/ http:\ /\ / I, "))

}

Return a

} replace all String.prototype.replaceAll = function (S1, S2) {

Return this.replace (new RegExp (S1, "gm"), S2)

}; operation of resize (function () {

Var fn = function () {

Var w = document.documentElement

? Document.documentElement.clientWidth

: document.body.clientWidth

R = 1255

B = Element.extend (document.body)

Classname = b.className

If (w)

< r) { //当窗体的宽度小于1255的时候执行相应的操作 } else { //当窗体的宽度大于1255的时候执行相应的操作 } }; if (window.addEventListener) { window.addEventListener("resize", function() { fn(); }); } else if (window.attachEvent) { window.attachEvent("onresize", function() { fn(); }); } fn(); })();滚动到顶部// 使用document.documentElement.scrollTop 或 document.body.scrollTop 获取到顶部的距离，从顶部 // 滚动一小部分距离。使用window.requestAnimationFrame()来滚动。 // @example // scrollToTop(); function scrollToTop() { var c = document.documentElement.scrollTop || document.body.scrollTop; if (c >

0) {

Window.requestAnimationFrame (scrollToTop)

Window.scrollTo (0, c-c / 8)

}

} set cookie value function setCookie (name, value, Hours) {

Var d = new Date ()

Var offset = 8

Var utc = d.getTime () + d.getTimezoneOffset () * 60000

Var nd = utc + 3600000 * offset

Var exp = new Date (nd)

Exp.setTime (exp.getTime () + Hours * 60 * 60 * 1000)

[xss_clean] =

Name +

= "+

Escape (value) +

"; path=/;expires=" +

Exp.toGMTString () +

"; domain=360doc.com;"

} set to the home page function setHomepage () {

If (document.all) {

Document.body.style.behavior = "url (# default#homepage)"

Document.body.setHomePage ("http://w3cboy.com");"

} else if (window.sidebar) {

If (window.netscape) {

Try {

Netscape.security.PrivilegeManager.enablePrivilege (

"UniversalXPConnect"

);

} catch (e) {

Alert (

"this operation is rejected by the browser. If you want to enable this feature, enter about:config in the address bar, and then set the signed.applets.codebase_principal_support value to true."

);

}

}

Var prefs = Components.classes [

"@ mozilla.org/preferences-service;1"

] .getService (Components.interfaces.nsIPrefBranch)

Prefs.setCharPref ("browser.startup.homepage", "http://w3cboy.com");"

}

} sort alphabetically, array each row function setSort () {

Var text = K1.value

.split (/ [\ r\ n] /)

.sort ()

.join ("\ r\ n"); / / order

Var test = K1.value

.split (/ [\ r\ n] /)

.sort ()

.reverse ()

.join ("\ r\ n"); / / reverse order

K1.value = K1.value! = text? Text: test

} delay execution / / for example, sleep (1000) means waiting for 1000 milliseconds, which can also be achieved from the perspective of Promise, Generator, Async/Await, etc.

/ / Promise

Const sleep = time = > {

Return new Promise (resolve = > setTimeout (resolve, time))

}

Sleep (1000) .then (() = > {

Console.log (1)

}) / / Generator

Function* sleepGenerator (time) {

Yield new Promise (function (resolve, reject) {

SetTimeout (resolve, time)

});

}

SleepGenerator (1000)

.next ()

.value.then () = > {

Console.log (1)

});

/ / async

Function sleep (time) {

Return new Promise (resolve = > setTimeout (resolve, time))

}

Async function output () {

Let out = await sleep (1000)

Console.log (1)

Return out

}

Output ()

Function sleep (callback, time) {

If (typeof callback = = "function") {

SetTimeout (callback, time)

}

}

Function output () {

Console.log (1)

}

Sleep (output, 1000); determine whether to start with a string String.prototype.startWith = function (s) {

Return this.indexOf (s) = = 0

}; clear script content function stripscript (s) {

Return s.replace (/. *? / gi, "")

} time personalized output function / *

1 、

< 60s, 显示为"刚刚" 2、>

= 1min & &

< 60 min, 显示与当前时间差"XX分钟前" 3、>

= 60min & &

< 1day, 显示与当前时间差"今天 XX:XX" 4、>

= 1day & &

< 1year, 显示日期"XX月XX日 XX:XX" 5、>

= 1year, showing the specific date "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

, /

Function timeFormat (time) {

Var date = new Date (time)

CurDate = new Date ()

Year = date.getFullYear ()

Month = date.getMonth () + 10

Day = date.getDate ()

Hour = date.getHours ()

Minute = date.getMinutes ()

CurYear = curDate.getFullYear ()

CurHour = curDate.getHours ()

TimeStr

If (year

< curYear) { timeStr = year + "年" + month + "月" + day + "日 " + hour + ":" + minute; } else { var pastTime = curDate - date, pastH = pastTime / 3600000; if (pastH >

CurHour) {

TimeStr = month + "month" + day + "Day" + hour + ":" + minute

} else if (pastH > = 1) {

TimeStr = "Today" + hour + ":" + minute + "points"

} else {

Var pastM = curDate.getMinutes ()-minute

If (pastM > 1) {

TimeStr = pastM + "minutes ago"

} else {

TimeStr = "just now"

}

}

}

Return timeStr

} full-width conversion to half-width function function toCDB (str) {

Var result = ""

For (var I = 0; I

< str.length; i++) { code = str.charCodeAt(i); if (code >

= 65281 & & code = 33 & & code = 0) {

/ / within the range of numbers

If (K1! = 3) {

/ / add small units

If (bn! = 0) {

Str = dw1 [K1] .concat (str)

}

K1cm +

} else {

/ / do not add small units, increase units

K1 = 0

Var temp = str.charAt (0)

If (temp = = "ten thousand" | | temp = = "hundred million")

/ / if there is no number in front of the large unit, leave the large unit.

Str = str.substr (1, str.length-1)

Str = dw2 [k2] .concat (str)

Sum = 0

}

}

If (K1 = = 3) {

/ / small units to thousands of large units into one

K2Qing +

}

}

/ / convert the decimal part

Var strdig = ""

If (dig! = "") {

Var n = dig.charAt (0)

If (n! = 0) {

Strdig + = dw [number (n)] + "Corner"; / / add numbers

}

Var n = dig.charAt (1)

If (n! = 0) {

Strdig + = dw [number (n)] + "points"; / / add numbers

}

}

Str + = "Yuan" + strdig

} catch (e) {

Return "0 yuan"

}

Return str

}

/ / split integers and decimals

Function splits (tranvalue) {

Var value = new Array ("", ")

Temp = tranvalue.split (. ")

For (var I = 0; I

< temp.length; i++) { value = temp; } return value; }清除空格String.prototype.trim = function() { var reExtraSpace = /^\s*(.*?)\s+$/; return this.replace(reExtraSpace, "$1"); }; // 清除左空格 function ltrim(s) { return s.replace(/^(\s*|　*)/, ""); } // 清除右空格 function rtrim(s) { return s.replace(/(\s*|　*)$/, ""); }随机数时间戳function uniqueId() { var a = Math.random, b = parseInt; return ( Number(new Date()).toString() + b(10 * a()) + b(10 * a()) + b(10 * a()) ); }实现utf8解码function utf8_decode(str_data) { var tmp_arr = [], i = 0, ac = 0, c1 = 0, c2 = 0, c3 = 0; str_data += ""; while (i < str_data.length) { c1 = str_data.charCodeAt(i); if (c1 < 128) { tmp_arr[ac++] = String.fromCharCode(c1); i++; } else if (c1 >

191 & & C1 < 224) {

C2 = str_data.charCodeAt (I + 1)

Tmp_ ARR [ac + +] = String.fromCharCode ((C1-31)

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