什么是我的脚本src URL？ [英] What is my script src URL?

问题描述

我唯一想到的是，这是一个简单可靠的方式来确定当前正在执行的JavaScript文件的URL（在网页内）扫描所有脚本 src 属性的DOM，以查找当前文件的引用方式，然后通过将其应用于 document.location找出绝对URL 。任何人都有其他的想法，有没有一些超级容易的方法我完全被忽视？

更新：通过DOM访问的脚本元素已经有一个 src 属性，其中包含完整的URL。我不知道这是多么普遍/标准，但也可以使用 getAttribute（src），这将返回[X] HTML中的任何原始属性值

解决方案

将其放在需要知道自己的url的js文件中。

完全限定（例如 http://www.example.com/js/main.js ）：

  var scriptSource =（function（scripts）{
 var scripts = document.getElementsByTagName（'script'），
 script = scripts [scripts.length  -  1]; 
 
 if（script.getAttribute.length！== undefined）{
 return script.src 
} 
 
 return script.getAttribute（'src'，-1）
}（））; 
  

或
出现在源（例如 /js/main.js ）：

  var scriptSource =（function {
 var scripts = document.getElementsByTagName（'script'），
 script = scripts [scripts.length  -  1]; 
 
 if（script.getAttribute.length！未定义）{
 return script.getAttribute（'src'）
} 
 
返回script.getAttribute（'src'，2）
}（））; 
  

请参阅 http://www.glennjones.net/Post/809/getAttributehrefbug.htm ，以解释 getAttribute 参数为使用（这是一个IE错误）。

Is there a simple and reliable way to determine the URL of the currently-executing JavaScript file (inside a web page)?

My only thought on this is to scan the DOM for all the script src attributes to find how the current file was referenced and then figure out the absolute URL by applying it to document.location. Anyone have other ideas, is there some super-easy method I completely overlooked?

UPDATE: Script elements accessed via the DOM already have a src property which contains the full URL. I don't know how ubiquitous/standard that is, but alternatively you can use getAttribute("src") which will return whatever raw attribute value is in the [X]HTML.

解决方案

Put this in the js file that needs to know it's own url.

Fully Qualified (eg http://www.example.com/js/main.js):

var scriptSource = (function(scripts) {
    var scripts = document.getElementsByTagName('script'),
        script = scripts[scripts.length - 1];

    if (script.getAttribute.length !== undefined) {
        return script.src
    }

    return script.getAttribute('src', -1)
}());

Or As it appears in source (eg /js/main.js):

var scriptSource = (function() {
    var scripts = document.getElementsByTagName('script'),
        script = scripts[scripts.length - 1];

    if (script.getAttribute.length !== undefined) {
        return script.getAttribute('src')
    }

    return script.getAttribute('src', 2)
}());

See http://www.glennjones.net/Post/809/getAttributehrefbug.htm for explanation of the getAttribute parameter being used (it's an IE bug).

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