我已经开始编写chrome扩展程序,我尝试做的是以下内容: 1)检测新标签负载,并在完全加载时执行(2) 2)将iframe注入加载的页面 3)更改iframe的src内部HTML。
我的清单是:(此刻我没有使用localhost权限)
{
"manifest_version" : 2,
"name" : "My extension",
"version" : "0.1",
"description" : "Extensioning",
"background" : {
"page" : "background.html"
},
"permissions": [
"tabs","https://*/*","http://*/*","http://localhost/*"],
"web_accessible_resources" : ["background.js","content_script.js","MainExtension.html","MainExtension.css","MainExtension.js","jquery-1.11.1.min.js"]
}
我的background.html:
<html>
<head>
<script type="text/javascript" src ="jquery-1.11.1.min.js"></script>
<script type="text/javascript" src="background.js"></script>
</head>
<body>
</body>
</html>
我的background.js(检测加载的标签并将脚本注入页面)
chrome.tabs.onUpdated.addListener(function(tabId,changeInfo,tab)
{
if(changeInfo.status == "complete")
{
alert("good");
chrome.tabs.executeScript(tabId,{ file : "content_script.js"});
}
});
我的content_script.js :(添加元素&#39;注入框架&#39;与src&#34; MainExtension.html&#34;)
var f = document.createElement('iframe');
f.id = "injected_frame";
f.style.zIndex = "2147483647";
f.style.top = "10%";
f.style.left = "0px";
f.style.position = "fixed";
f.style.width = "320px";
f.style.height = "240px";
f.style.border = "0px";
f.style.margin = "0px";
f.style.padding = "0px";
f.src = chrome.extension.getURL('MainExtension.html');
document.body.appendChild(f);
MainExtension.html(在iframe中显示):
<!DOCTYPE html>
<html>
<head >
<link rel="stylesheet" href ="MainExtension.css">
<script type="text/javascript" src ="jquery-1.11.1.min.js"></script>
<script type="text/javascript" src ="MainExtension.js"></script>
</head>
<body>
<div id = "wrapper">
<div id = "headersection">
<p id = "imgwrapper">
<img src ="mystock.png" alt = "My E" id = "logoimg">
</p>
<p id = "headertext">My Extension</p>
</div>
<hr>
<div id = "infosection">
<p> p found : bla1,bla2,</p>
<p> a : s1 </p>
<hr>
</div>
</div>
<div id = "datas">sdfsdfsdfsdfsdf</div>
</body>
</html>
我想做的是: 在我在注入的脚本(content_script.js)中添加iframe之后,我想要更改MainExtention.html,它是&#39; inject_frame&#39;的src。元件。
我该怎么做?或者你能否提出其他选择?
感谢。
答案 0 :(得分:0)
我会尝试以下两种方法之一:
1)直接从内容脚本向服务器发出数据请求(推荐)。
2)通过消息传递发送HTML:
修改content_script.js
:
chrome.runtime.onMessage.addListener(function(html) {
if (html) {
f.innerHTML = html;
}
});
修改background.js
以包含以下内容:
function onReceiveFromServer(html) {
chrome.tabs.sendMessage(tabId, html);
}