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

This article introduces the relevant knowledge of "JS obtaining web page source code". 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!

JS gets the source code of the web page

Remote web page source code read / * page font style * / body, td, input, textarea {font-family:Arial; font-size:12px;} / / used to create XMLHttpRequest object function createXmlHttp () {/ / use different creation methods if (window.XMLHttpRequest) {xmlHttp = new XMLHttpRequest () depending on whether the window.XMLHttpRequest object exists / / creation methods supported by browsers such as FireFox and Opera} else {xmlHttp = new ActiveXObject ("Microsoft.XMLHTTP"); / / creation methods supported by IE browsers}} / / obtain remote web page source code function getSource () {var url = document.getElementById ("url") directly through XMLHttpRequest object. Value / / get destination address information / / prompt the user to enter if (url = "") {alert ("Please enter a web address if the address is empty.") ; return;} document.getElementById ("source"). Value = "loading." / / prompt that createXmlHttp () is being loaded; / / create XMLHttpRequest object xmlHttp.onreadystatechange = writeSource; / / set callback function xmlHttp.open ("GET", url, true); xmlHttp.send (null) } / / write the remote web page source code to the page text area function writeSource () {if (xmlHttp.readyState = = 4) {document.getElementById ("source"). Value = xmlHttp.responseText;}} remote web page source code read address:

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