Question

I m 寻找在外部档案中张贴变量的方法。

类似:

<script type="text/javascript" src="/js/script-starter.js?var=value"></script>

然后我要说几句(因此,价值)。这样做是否可行?

谢谢!

Answer 1

Yes, it is possible. You will have to look for all script tags in the DOM (make sure the DOM is loaded before attempting to look in it) using the document.getElementsByTagName function, loop through the resulting list, find the corresponding script and parse the src property in order to extract the value you are looking for.

大致如下:

var scripts = document.getElementsByTagName( script );
for (var i = 0; i < scripts.length; i++) {
    var src = scripts[i].src;
    // Now that you know the src you could test whether this is the script
    // that you are looking for (i.e. does it contain the script-starter.js string)
    // and if it does parse it.
}

关于<代码>src的分类,属性是指从中提取指示值的查询,您可使用。

Answer 2

如果该笔文字是服务器式文字,接收可变的盘点和作为产出回归的javascript代码,则有可能。

Answer 3

How about declaring the variable before script file loading:

<script type="text/javascript">var myVar = "Value"</script>
<script type="text/javascript" src="/js/script-starter.js"></script>

因此,你可以在你的文字中使用这一变量。这可能是最容易的方法之一。

Answer 4

为什么不把变数隐藏在一或一页。

<a id="myHiddenVar" style="display:none;">variables</a>

之后,请见您。 j 随同接触

var obj = document.getElementById("myHiddenVar").innerHTML;

或 j

var obj = $("#myHiddenVar").text();

Answer 5

function getJSPassedVars(script_name, varName) {
    var scripts = $( script ),
        res = null;

    $.each(scripts, function() {
        var src = this.src;
        if(src.indexOf(script_name) >= 0) {
            varName = varName.replace(/[[]/,"\[").replace(/[]]/,"\]");
            var string = new RegExp("[\?&]"+ varName +"=([^&#]*)"),
                args = string.exec(src);
            if(!args.length) { 
                res = null; 
            } else { 
                res = args[1]; 
            }
        }
    });
    return res;
}

console.log(getJSPassedVars( script-starter.js ,  var ));

在我看来,我的手法结构如下:

MyApp/
     index.html
     jquery.js
     my.js

以上职能载于my.js with console.log ,并将其列入index.html>。

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