我正在使用 HTML 和 javaScript .. 我正在尝试构建一个 chrome 扩展，它将在弹出窗口中显示来自网站的一些信息
我需要在我的网页上下文中获取http://met.guc.edu.eg的页面源，并使用它来获取一些“li”标签并对它们做一些工作（RegEx）
例如在网页中显示学生所学的课程——通过从http://met.guc.edu.eg中获取它们......并在弹出窗口中以一种很好的方式显示它们
问问题
8332 次
3 回答
4
由于对此还没有真正的答案，我将发布我使用的方法——我不知道这是否是最好的方法——但它确实有效。
XHR 可能不是最好的主意的原因是因为它并不总是会给你某个标签的确切来源 - 这种方式会。
内容.js
chrome.extension.onRequest.addListener(function(request, sender, callback)
{
if (request.action == 'getSource')
{
callback(document.documentElement.outerHTML);
}
});
背景.html
chrome.tabs.sendRequest(tab.id, {action : 'getSource'}, function(source) {
console.log(source);
});
于 2011-01-03T19:14:50.570 回答
-1
你需要阅读 XHR。
请参阅此处：http
://code.google.com/chrome/extensions/xhr.html
这将让您将http://met.guc.edu.eg的内容加载到变量中。
然后你需要阅读正则表达式，它可以让你提取你想要的信息。
如果不实际执行，几乎不可能给出完整的答案。
您可能会发现在您控制尺寸/滚动的 Iframe 中加载内容更容易。
于 2010-06-11T15:54:45.653 回答
-1
根据要求，这里是来源：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>
Faculty of Media Engineering and Technology (MET) - The German University in Cairo
</title>
<!--[if gte IE 7 ]>
<!-->
<link type="text/css" href="Media/ResourceHandler.ashx?v=1&fileSet=homepage_css&type=text/css" rel="Stylesheet" />
<script type="text/javascript" src="Media/ResourceHandler.ashx?v=1&fileSet=homepage_script&type=application/x-javascript"></script>
<![endif]-->
</head>
<body onload="init();">
<form name="ctl00" method="post" action="Default.aspx" onsubmit="javascript:return WebForm_OnSubmit();" id="ctl00">
<div>
<input type="hidden" name="ScriptManager1_HiddenField" id="ScriptManager1_HiddenField" value="" />
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="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" />
</div>
<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['ctl00'];
if (!theForm) {
theForm = document.ctl00;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
//]]>
</script>
<script src="/WebResource.axd?d=hjWzicBH57aDEOAXMpQVJQ2&t=633566901938396560" type="text/javascript"></script>
<script src="/ScriptResource.axd?d=H0761Oq7Alukyw82KELp8-Txl2kQFm7sZfTkrcnjSDzxZz0PrQZLm48rbx9Jm7dI_LMT2zH0QUfg9RJVLEsm7Q2&t=633566901938396560" type="text/javascript"></script>
<script src="/ScriptResource.axd?d=9NKqPW-jeqHS98DhHZ6Iy5ulSdcD3uOEBYcWmPxYVzi01PBdj_S7yBr5N-59MNCSkIHANMTKEfgCCoAEWIDetGqltgG2yF0m6QP4thTRHlI1&t=633432692861214540" type="text/javascript"></script>
<script src="/ScriptResource.axd?d=9NKqPW-jeqHS98DhHZ6Iy5ulSdcD3uOEBYcWmPxYVzi01PBdj_S7yBr5N-59MNCSkIHANMTKEfgCCoAEWIDetB9rztfIh11Bb3t4nicyu881&t=633432692861214540" type="text/javascript"></script>
<script src="/Default.aspx?_TSM_HiddenField_=ScriptManager1_HiddenField&_TSM_CombinedScripts_=%3b%3bAjaxControlToolkit%2c+Version%3d1.0.10920.32880%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3aen-US%3a816bbca1-959d-46fd-928f-6347d6f2c9c3%3a9ea3f0e2%3ae2e86ef9%3a9e8e87e9%3a1df13a87%3a4c9865be%3aba594826%3a757f92c2" type="text/javascript"></script>
<script type="text/javascript">
//<![CDATA[
function WebForm_OnSubmit() {
if (typeof(ValidatorOnSubmit) == "function" && ValidatorOnSubmit() == false) return false;
return true;
}
//]]>
</script>
<script type="text/javascript">
//<![CDATA[
Sys.WebForms.PageRequestManager._initialize('ScriptManager1', document.getElementById('ctl00'));
Sys.WebForms.PageRequestManager.getInstance()._updateControls([], [], [], 90);
//]]>
</script>
<!-- Page Container -->
<div id="container">
<!-- Header and Menu -->
<div id="headerAndMenu">
<!-- Title -->
<h1 id="logo">
<a href="http://www.guc.edu.eg" target="_blank">
<img src="Media/Images/HomePage/Logo.png.ashx" alt="The German University in Cairo" /></a></h1>
<h2 id="title">
Faculty of Media Engineering and Technology</h2>
<!-- Title -->
<!-- Menu -->
<div id="menu">
<div id="mainPart">
<div id="aboutMET" onmouseenter="opacity('aboutMETSubMenu',0,100,5)" onmouseleave="opacity('aboutMETSubMenu',100,0,5)">
<div id="aboutMETSubMenu">
<ul id="aboutMETSubMenuList">
<li id="programs"><a class="main" href="About/Programs.aspx">Programs</a> </li>
<li id="degrees"><a class="main" href="About/Degrees.aspx">Degrees</a> </li>
<li id="ourPeople"><a class="main" href="People/">OurPeople</a></li>
<li id="admission"><a class="main" href="About/Admission.aspx">Admission</a> </li>
</ul>
</div>
</div>
<div id="academics" onmouseenter="opacity('academicsSubMenu',0,100,5)" onmouseleave="opacity('academicsSubMenu',100,0,5)">
<div id="academicsSubMenu">
<ul id="academicsSubMenuList">
<li id="underGraduate"><a class="main" href="Courses/Undergrad.aspx">
Undergraduate Courses </a></li>
<li id="graduate"><a class="main" href="Courses/Grad.aspx">
Graduate Courses</a> </li>
<li id="courseCatalogue"><a class="main" href="Courses/">Course
Catalogue</a> </li>
<li id="research"><a class="main" href="Research/">Research</a> </li>
</ul>
</div>
</div>
<div id="extras" onmouseenter="opacity('extrasSubMenu',0,100,5)" onmouseleave="opacity('extrasSubMenu',100,0,5)">
<div id="extrasSubMenu">
<ul id="extrasSubMenuList">
<li id="activities"><a class="main" href="Activities/">Activities</a>
</li>
<li id="onlineTutorials"><a class="main" href="OnlineTutorials/"
>Online Tutorials</a> </li>
<li id="staffBlog"><a class="main" href="#">Staff Blog</a> </li>
<li id="showCase"><a class="main" href="#">Showcase</a> </li>
<li id="forum"><a class="main" href="Forum/">Forum</a> </li>
</ul>
</div>
</div>
<div id="agenda" onmouseenter="opacity('agendaSubMenu',0,100,5)" onmouseleave="opacity('agendaSubMenu',100,0,5)">
<div id="agendaSubMenu">
<ul id="agendaSubMenuList">
<li id="announcements"><a class="main" href="Agenda/Announcements.aspx">Announcements</a>
</li>
<li id="calendar"><a class="main" href="Agenda/">Calendar</a> </li>
<li id="policies"><a class="main" href="About/Policies.aspx">Policies</a> </li>
</ul>
</div>
</div>
</div>
</div>
<!-- /Menu -->
</div>
<!-- /Header and Menu -->
<!-- Content -->
<div id="content">
<!-- Login -->
<div id="login">
<div class="homePageLoginDiv">
<div id="Div1" style="position: relative; top: 5px;">
<div>
<div class="tools-menu-header" id="login_label">
<img style="border-style: none; vertical-align: middle; padding-right: 5px;" src="Media/Icons/key_go.png.ashx"><span
class="label">Login</span></div>
<div class="tools-menu-body" id="tools-menu-div">
<label>
GUC Email
</label>
<div class="leftTBoxSide">
</div>
<div>
<input name="LoginUserControl1$usernameTextBox" type="text" id="LoginUserControl1_usernameTextBox" class="userNameTBox" /></div>
<div class="rightTBoxSide">
</div>
<span id="LoginUserControl1_LoginEmailRequiredFieldValidator" style="color:Red;display:none;"></span>
<span id="LoginUserControl1_LoginEmailFormatValidator" style="color:Red;display:none;"></span>
<label>
Password</label>
<div class="leftTBoxSide">
</div>
<div>
<input name="LoginUserControl1$passwordTextBox" type="password" id="LoginUserControl1_passwordTextBox" class="passwordTBox" /></div>
<div class="rightTBoxSide">
</div>
<span id="LoginUserControl1_LoginPasswordRequiredFieldValidator" style="color:Red;display:none;"></span>
<input type="image" name="LoginUserControl1$loginButton" id="LoginUserControl1_loginButton" class="loginBtn" src="Media/Images/HomePage/goButton.gif.ashx" onclick="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("LoginUserControl1$loginButton", "", true, "", "", false, false))" style="border-width:0px;" />
<span class="checkbox"><input id="LoginUserControl1_RememberMeCheckbox" type="checkbox" name="LoginUserControl1$RememberMeCheckbox" /></span>
<label class="checkbox_label" for="LoginUserControl1_RememberMeCheckbox">
Remember me</label>
<a id="LoginUserControl1_forgotPasswordButton" class="forgotPasswordBtn" href="javascript:__doPostBack('LoginUserControl1$forgotPasswordButton','')">Forgot password?</a><span
style="margin-right: 3px;">Student?</span><a href="Student/RegisterStudent.aspx">Register</a></div>
</div>
</div>
</div>
</div>
<!-- /Login -->
<!-- Search -->
<div id="search">
</div>
<!-- /Search -->
<!-- News -->
<div id="news">
<!-- News Glider-->
<div id="newsGlider">
<div id="previousDiv">
<img src="Media/Images/HomePage/prev.png.ashx" id="previous" alt="Previous" onclick="my_glider.previous();return false;" /></div>
<div class="scroller">
<div class="content">
<input type="hidden" name="newsRepeater$ctl00$idHdnField" id="newsRepeater_ctl00_idHdnField" value="17" />
<div class="section" id='News_17'>
<h2 class="newsTitle">
SmartSoft are the champs
</h2>
<img id="newsRepeater_ctl00_Image1" class="newsImage" alt="MET Stories" src="Repository/NewsComponent/SOriginalFinal.jpg" style="border-width:0px;" />
<p class="newsParagraph">
After competing against CSEN and BI companies. SmartSoft managed to
win the Software Engineering Competition for Spring 2010 after developing an outstanding online tool for automating agile software management. Congratulations to SmartSoft!
</p>
<div id="newsRepeater_ctl00_morelink" style="display:none;">
<a class="newsLink" href=""
target="_blank">more</a>
</div>
</div>
<input type="hidden" name="newsRepeater$ctl01$idHdnField" id="newsRepeater_ctl01_idHdnField" value="1" />
<div class="section" id='News_1'>
<h2 class="newsTitle">
Media Engineering at the GUC
</h2>
<img id="newsRepeater_ctl01_Image1" class="newsImage" alt="MET Stories" src="Repository/NewsComponent/library.jpg" style="border-width:0px;" />
<p class="newsParagraph">
Media Engineering and Technology aims at the evolving field of nearly all aspects of information and multimedia processing. The study program in "Media Engineering and Technology" rests on the same fundamentals as for Information Technology.
</p>
<div id="newsRepeater_ctl01_morelink" style="display: block;">
<a class="newsLink" href="About/Programs.aspx"
target="_blank">more</a>
</div>
</div>
</div>
</div>
<img src="Media/Images/HomePage/next.png.ashx" id="next" alt="Next" onclick="my_glider.next();return false;" /><!--<div id="nextDiv"></div> -->
</div>
</div>
<!-- /News -->
<!-- Footer -->
<div id="footer">
<h5 class="right">
<a href="Feeds/RSS.aspx">
<img src="Media/Icons/rss.png.ashx" alt="RSS" style="border-style: none; position: relative;
top: 3px; padding-right: 2px;" /><b>RSS</b> Feeds</a> <a href="Credits/robusta.aspx">
Credits</a>
</h5>
<h5 class="left">
Copyright © 2008 GUC. All Rights Reserved.</h5>
</div>
<!-- /Footer -->
</div>
<!-- /Content -->
</div>
<!-- /Page Container -->
<!-- Extra Divs -->
<!-- /Extra Divs -->
<div id="glider_script">
<script type="text/javascript" charset="utf-8">
var my_glider = new Glider('newsGlider', {duration:1.0, autoGlide:true, frequency:15});
</script>
</div>
<script type="text/javascript">
//<![CDATA[
var Page_Validators = new Array(document.getElementById("LoginUserControl1_LoginEmailRequiredFieldValidator"), document.getElementById("LoginUserControl1_LoginEmailFormatValidator"), document.getElementById("LoginUserControl1_LoginPasswordRequiredFieldValidator"));
//]]>
</script>
<script type="text/javascript">
//<![CDATA[
var LoginUserControl1_LoginEmailRequiredFieldValidator = document.all ? document.all["LoginUserControl1_LoginEmailRequiredFieldValidator"] : document.getElementById("LoginUserControl1_LoginEmailRequiredFieldValidator");
LoginUserControl1_LoginEmailRequiredFieldValidator.controltovalidate = "LoginUserControl1_usernameTextBox";
LoginUserControl1_LoginEmailRequiredFieldValidator.errormessage = "Email required.";
LoginUserControl1_LoginEmailRequiredFieldValidator.display = "None";
LoginUserControl1_LoginEmailRequiredFieldValidator.evaluationfunction = "RequiredFieldValidatorEvaluateIsValid";
LoginUserControl1_LoginEmailRequiredFieldValidator.initialvalue = "";
var LoginUserControl1_LoginEmailFormatValidator = document.all ? document.all["LoginUserControl1_LoginEmailFormatValidator"] : document.getElementById("LoginUserControl1_LoginEmailFormatValidator");
LoginUserControl1_LoginEmailFormatValidator.controltovalidate = "LoginUserControl1_usernameTextBox";
LoginUserControl1_LoginEmailFormatValidator.errormessage = "Must be in the form of user@student.guc.edu.eg OR user@guc.edu.eg";
LoginUserControl1_LoginEmailFormatValidator.display = "None";
LoginUserControl1_LoginEmailFormatValidator.evaluationfunction = "RegularExpressionValidatorEvaluateIsValid";
LoginUserControl1_LoginEmailFormatValidator.validationexpression = "\\w+([-+.\']\\w+)*@(student.)?guc.edu.eg";
var LoginUserControl1_LoginPasswordRequiredFieldValidator = document.all ? document.all["LoginUserControl1_LoginPasswordRequiredFieldValidator"] : document.getElementById("LoginUserControl1_LoginPasswordRequiredFieldValidator");
LoginUserControl1_LoginPasswordRequiredFieldValidator.controltovalidate = "LoginUserControl1_passwordTextBox";
LoginUserControl1_LoginPasswordRequiredFieldValidator.errormessage = "Password required.";
LoginUserControl1_LoginPasswordRequiredFieldValidator.display = "None";
LoginUserControl1_LoginPasswordRequiredFieldValidator.evaluationfunction = "RequiredFieldValidatorEvaluateIsValid";
LoginUserControl1_LoginPasswordRequiredFieldValidator.initialvalue = "";
//]]>
</script>
<script type="text/javascript">
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var Page_ValidationActive = false;
if (typeof(ValidatorOnLoad) == "function") {
ValidatorOnLoad();
}
function ValidatorOnSubmit() {
if (Page_ValidationActive) {
return ValidatorCommonOnSubmit();
}
else {
return true;
}
}
// -->
</script>
<script type="text/javascript">
//<![CDATA[
Sys.Application.initialize();
Sys.Application.add_init(function() {
$create(AjaxControlToolkit.ValidatorCalloutBehavior, {"closeImageUrl":"/WebResource.axd?d=E9XUtTpBpgn1nrqvm7JdsQNAiTSrs01kvYMfJ6_c6indZV0XUSo9nn5ewbqAXA5hefaIKnoyXSIFnFPdZX8u_dwAMV0u0RfKJgPDjFETh3g1&t=633887970297152468","highlightCssClass":"invalidInput","id":"LoginUserControl1_LoginEmailRequiredFieldValidatorExtender","warningIconImageUrl":"/WebResource.axd?d=E9XUtTpBpgn1nrqvm7JdsQNAiTSrs01kvYMfJ6_c6indZV0XUSo9nn5ewbqAXA5hpBwM9IEYB0L_JPlcVCV_StBVa8rc0SgI1L1ARCQ2e4o1&t=633887970297152468"}, null, null, $get("LoginUserControl1_LoginEmailRequiredFieldValidator"));
});
Sys.Application.add_init(function() {
$create(AjaxControlToolkit.ValidatorCalloutBehavior, {"closeImageUrl":"/WebResource.axd?d=E9XUtTpBpgn1nrqvm7JdsQNAiTSrs01kvYMfJ6_c6indZV0XUSo9nn5ewbqAXA5hefaIKnoyXSIFnFPdZX8u_dwAMV0u0RfKJgPDjFETh3g1&t=633887970297152468","highlightCssClass":"invalidInput","id":"LoginUserControl1_LoginEmailFormatValidatorExtender","warningIconImageUrl":"/WebResource.axd?d=E9XUtTpBpgn1nrqvm7JdsQNAiTSrs01kvYMfJ6_c6indZV0XUSo9nn5ewbqAXA5hpBwM9IEYB0L_JPlcVCV_StBVa8rc0SgI1L1ARCQ2e4o1&t=633887970297152468"}, null, null, $get("LoginUserControl1_LoginEmailFormatValidator"));
});
document.getElementById('LoginUserControl1_LoginEmailRequiredFieldValidator').dispose = function() {
Array.remove(Page_Validators, document.getElementById('LoginUserControl1_LoginEmailRequiredFieldValidator'));
}
document.getElementById('LoginUserControl1_LoginEmailFormatValidator').dispose = function() {
Array.remove(Page_Validators, document.getElementById('LoginUserControl1_LoginEmailFormatValidator'));
}
document.getElementById('LoginUserControl1_LoginPasswordRequiredFieldValidator').dispose = function() {
Array.remove(Page_Validators, document.getElementById('LoginUserControl1_LoginPasswordRequiredFieldValidator'));
}
//]]>
</script>
</form>
<script type="text/javascript">
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
var pageTracker = _gat._getTracker("UA-6040050-1");
pageTracker._trackPageview();
</script>
</body>
</html>
您通常可以通过按 ctrl+u 获取任何网站的源代码（至少对于 Chrome）
于 2010-06-11T15:25:15.683 回答