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单击javascript访问基于Web的脚本

[英]javascript access web-based script on button click

How would I go about accessing a web-based script. 我将如何访问基于Web的脚本。 I don't know if I'm wording that correctly. 我不知道我的措词是否正确。 I just want to be able to click a button and run the function. 我只希望能够单击一个按钮并运行该功能。 That's not the issue. 那不是问题。 The issue is how do I go about putting it in a function. 问题是如何将其放入函数中。

     <script type="text/javascript" src="http://wwww.blah.com/blah?blah=blah"></script>

how would i get that to run on button click? 我如何才能在单击按钮时运行它? I've tried every which way to put it in a function and call the function. 我尝试了各种方法将其放入函数中并调用该函数。 No luck though. 不过没有运气。

var buildScript = function (url, optionalCallback) {
    var script = document.createElement("script"),
        parent = document.getElementsByTagName("script")[0].parentElement;

    script.onload = optionalCallback;
    script.src = url;
    parent.appendChild(script);
};


var button = document.getElementById("my-button");
button.onclick = function () { buildScript("//url.to.site/file.js"); };

Or optionally: 或可选:

button.onclick = function () {
    buildScript("//url.to.site/file.js", function () {
        function_from_loaded_script();
    });
};

If you need it to do other stuff, you might need to be more specific. 如果您需要它来做其他事情,则可能需要更具体。

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