我该如何使用JavaScript以编程方式打开“查看源代码”窗口(就像在浏览器中右键单击并单击“查看源代码”一样)?这是可能的吗?
我该如何使用JavaScript以编程方式打开“查看源代码”窗口(就像在浏览器中右键单击并单击“查看源代码”一样)?这是可能的吗?
您可以使用“view-source” URI模式,该模式受Firefox、Chrome和旧版本IE的支持。
不需要JavaScript,只需提供一个普通链接到您想让用户在源代码视图中查看的页面:
<a target="_blank" href="view-source:http://www.wikipedia.org/">view Wikipedia's home page HTML source</a>
更多信息:
function showSource(){;
var source = "<html>";
source += document.getElementsByTagName('html')[0].innerHTML;
source += "</html>";
//now we need to escape the html special chars, javascript has escape
//but this does not do what we want
source = source.replace(/</g, "<").replace(/>/g, ">");
//now we add <pre> tags to preserve whitespace
source = "<pre>"+source+"</pre>";
//now open the window and set the source as the content
sourceWindow = window.open('','Source of page','height=800,width=800,scrollbars=1,resizable=1');
sourceWindow.document.write(source);
sourceWindow.document.close(); //close the document for writing, not the window
//give source window focus
if(window.focus) sourceWindow.focus();
}
这种方法不能完全显示源代码,因为它不会显示 HTML 标签之外的任何内容或者在 html 标签内的属性,但应该足够接近,并且可跨浏览器使用。
与 view-source 的解决方案相比,这种解决方案的优势是它也适用于 Windows XP SP2 上的 Internet Explorer 6 >,就这样。如果您的受众群体都不在此范围内,请选择 view-source 选项,它更简单。
outerHTML
? - Bergiview-source:
模式的浏览器。javascript:void(window.open('view-source:'+location.href))
data:text/html;charset=utf-8,<html>
<a href="javascript:void(window.open('view-source:'+location.href))">view-source</a>
</html>
http:
或基于HTML
的页面(因此缺乏像.innerHTML
之类的属性)。data:image/png;base64,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
可以直接使用以下方式进行检查:
view-source:data:image/png;base64,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
注意:制作上述书签小程序是一个自相矛盾和冗余的行为,因为一般支持 view-source:
协议的浏览器直接在用户界面中实现了它 - 但有些界面功能严重受损,这就是为什么使用时特别需要这个书签的原因:
window.navigator.userAgent=
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4
(Splashtop-v1.2.17.0)
<a href="javascript:void(window.open('view-source:file:///'))">
use view-source to traverse and peruse Splashtop system files</a>
浏览Splashtop目录结构,通常使用的是ie:view-source:file://media/
)。
魔鬼逼我这么说 - 无法抵制详细解释:
...这个链接(即
view-source:
)可用于任何URI具有任意模式的页面...
包括它本身,观察URI:
view-source:view-source:view-source:view-source:view-source:about:blank
产生明显的HTML源代码,因此具有.innerHTML
属性
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title></title></head><body></body></html>
view-source:view-source:view-source:view-source:view-source:about:logo
这不是HTML源代码,因此没有.innerHTML
属性。
至于
任意模式的URI:
view-source:jar:, view-source:chrome:, view-source:place:, ... ?
view-source:place:...
不能生成任何可行的页面,但place:...
URI也不会产生页面,尽管这样的URI可以用FF [v.>3.04?]书签保存。所以...<a href='view-source:javascript:with(document){write(42);close();}' >v-s:js: answer</a>
<a href= 'javascript:with(document){write(42);close();}' >js: question</a>
//get HTML from DOM (not really HTML from the server but an interrupted one - the plus is that it is immediate to fetch).
(function(){
"use strict";
var d = document.createElement("div");
d.style.cssText = "max-width:500px; max-height:200px; background-color:rgba(223,223,223,.7); border:3px solid rgba(0,0,0,.5); padding:5px; margin:10px; overflow-x:hidden; overflow-y:auto; word-break:break-word; font-family:'Courier New',Consolas,Lucida Console,monospace,sans-serif; text-shadow:.3px .3px rgba(0,0,0,.2),-0.3px -0.3px rgba(0,0,0,.2); border-radius:5px; box-shadow:1px 1px 5px rgba(0,0,0,.3),-1px -1px 5px rgba(0,0,0,.3)";
d.appendChild(document.createTextNode(document.querySelector('html').innerHTML));
document.querySelector('body').appendChild(d);
}());
这是“安全”的结果,没有包装HTML和doctype:
//get HTML from server, its the real-deal, but requires internet-connection (again...), since its the same-page you are OK to Ajax (domain wise..)
(function(){
var xhr = new XMLHttpRequest();
xhr.responseType = "text";
xhr.onreadystatechange = function(e){
var
xhr = e.target
, d = document.createElement("div")
;
if(xhr.DONE !== xhr.readyState) return;
d.style.cssText = "max-width:500px; max-height:200px; background-color:rgba(223,223,223,.7); border:3px solid rgba(0,0,0,.5); padding:5px; margin:10px; overflow-x:hidden; overflow-y:auto; word-break:break-word; font-family:'Courier New',Consolas,Lucida Console,monospace,sans-serif; text-shadow:.3px .3px rgba(0,0,0,.2),-0.3px -0.3px rgba(0,0,0,.2); border-radius:5px; box-shadow:1px 1px 5px rgba(0,0,0,.3),-1px -1px 5px rgba(0,0,0,.3)";
d.appendChild(document.createTextNode(xhr.responseText));
document.querySelector('body').appendChild(d);
}
xhr.open("GET", String(window.location.href), true);
xhr.send();
}());
这是并排的结果,注意区别。
注释和相关信息:
outerHTML
(但并不总是在每个标准DOM中都可用)localStorage
中,在上面的代码中分叉,并编写一个小巧而精美的脚本,将此脚本放置在页面的head
中,就在您开始修改页面源代码之前..根据您的使用情况,一种解决方案是将其作为Firefox插件或类似产品来完成。
//function showSource() {
window.location = "view-source:" + window.location;
//}
希望它与您的浏览器兼容!
view-source:
链接,现在会收到拒绝访问的错误提示。 - Tot Zam