使用 Javascript 替换包括头部在内的整个页面
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Replacing Entire Page Including Head Using Javascript
提问by Joshua
I have a Javascript function that is passed a string. The string that it is passed is an entire webpage, including the header. I need the Javascript to replace the entire current page, head and all with the new content.
我有一个传递字符串的 Javascript 函数。它传递的字符串是整个网页，包括标题。我需要 Javascript 用新内容替换整个当前页面、头部和所有内容。
Consider the following HTML file:
考虑以下 HTML 文件：
<html>
<head>
<script language="Javascript">
<!--
var newContent='<html><head><script language="Javascript">function Hi() {alert("Goodbye World");}</script></head><body onload="Hi();">New Content</body></html>';
function ReplaceContent(NC) {
document.body.innerHTML=NC;
}
function Hi() {
alert("Hello World");
ReplaceContent(newContent);
}
-->
</script>
</head>
<body onload="Hi();">
Original Content
</body>
</html>
In this case, the passed string is:
在这种情况下，传递的字符串是：
<html><head><script language="Javascript">function Hi() {alert("Goodbye World");}</script></head><body onload="Hi();">New Content</body></html>
But of course, since the "ReplaceContent" function is only replacing the body, but not the header, I never get the "Goodbye World" alert.
但是当然，由于“ReplaceContent”函数只是替换正文，而不是标题，因此我永远不会收到“再见世界”警报。
Ignoring "why I would want to do this",How can I dynamically replace the entire page, including the header, and javascript functions?
忽略“我为什么要这样做”，如何动态替换整个页面，包括页眉和 javascript 函数？
Please remember the "source" html ('newContent' above) exists only as a string, it does not exist on a server anywhere, so I cannot just redirect to it.
请记住“源”html（上面的'newContent'）仅作为字符串存在，它不存在于服务器上的任何地方，所以我不能只是重定向到它。
What changes I make to "ReplaceContent" above to cause the "Goodbye World" alert to appear once the content is replaced? Please keep in mind I cannot know in advance the value of the newContent variable!!
我对上面的“ReplaceContent”进行了哪些更改以在内容被替换后显示“Goodbye World”警报？ 请记住，我无法提前知道 newContent 变量的值！！
采纳答案by Dark Falcon
Use document.write.
使用 document.write。
<html>
<head>
<script language="Javascript">
<!--
var newContent='<html><head><script language="Javascript">function Hi() {alert("Goodbye World");}</script></head><body onload="Hi();">New Content</body></html>';
function ReplaceContent(NC) {
document.open();
document.write(NC);
document.close();
}
function Hi() {
ReplaceContent(newContent);
}
-->
</script>
</head>
<body>
Original Content
<a href="javascript:Hi()">Replace</a>
</body>
</html>
回答by Free Consulting
Script
脚本
javascript:document.open('text/html');document.write('<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>HAI</title></head><body><h1>OMG HAI2U!!!1</h1></body></html>');document.close();
DOM snapshot of the resulting page
结果页面的 DOM 快照
<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>HAI</title></head><body><h1>OMG HAI2U!!!1</h1></body></html>
回答by Robin Maben
$("html").html('your page html here');
回答by YoniXw
document.getElementsByTagName("html")[0].innerHTMLContains both headand bodytags.
I Usually avoid document.open\write\close
document.getElementsByTagName("html")[0].innerHTML包含head和body标签。我通常避免document.open\write\close
回答by Ravi Prakas
var script = document.createElement('script');
script.src = 'http://code.jquery.com/jquery-1.7.2.min.js';
script.type = 'text/javascript';
document.getElementsByTagName('head')[0].appendChild(script);