How to use touch event to realize the effect of sliding up and down pages in html5 01/30 Update SLTechnology News&Howtos

How to use touch event to realize the effect of sliding up and down pages in html5

2025-01-30 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Internet Technology >

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This article introduces the relevant knowledge of "how to use touch events in html5 to achieve the effect of sliding up and down pages". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The html5 touch event realizes the effect of sliding up and down the page.

2014-4-29

* {margin: 0; padding: 0;}

# outer {width:90%; height: 490px; background: # 000; margin: auto; overflow: hidden;}

# inner {width:80%; height: 2000px; background: # f67d42; margin: auto; position:relative; top:0;}

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Coordinates when var startX,// touches

StartY

X, / / sliding distance

AboveY=0; / / set a global variable to record the position of the last internal block slide

Var inner=document.getElementById ("inner")

Function touchSatrt (e) {/ / Touch

E.preventDefault ()

Var touch=e.touches [0]

StartY = touch.pageY; / / coordinates at the time of touch

}

Function touchMove (e) {/ / Slide

E.preventDefault ()

Var touch = e.touches [0]

Y = touch.pageY-startY;// sliding distance

/ / inner.style.webkitTransform = 'translate (' + 0 +'px,'+ y +'px)'; / / you can also use css3

Inner.style.top=aboveY+y+ "px"; / / in this sentence

}

Function touchEnd (e) {/ / fingers off the screen

E.preventDefault ()

AboveY=parseInt (inner.style.top); / / record the sliding position of the internal slider at the end of touch. It is reflected in the global variable that it must be converted to an integer number with parseInt ().

} / /

Document.getElementById ("outer") .addEventListener ('touchstart', touchSatrt,false)

Document.getElementById ("outer") .addEventListener ('touchmove', touchMove,false)

Document.getElementById ("outer") .addEventListener ('touchend', touchEnd,false)

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