javascript 我们是“声明”jQuery 还是简单地使用它？
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Do we 'declare' jQuery or we simply use it?
提问by Rohan
I was asked in an interview that how do you 'declare'jQuery? He did not mean a jQuery variable or a $(func()). In case you find this question weird, please do not penalize me for this as I'm enquiring just cause I was asked. :)
我在一次采访中被问到你如何“声明”jQuery？他的意思不是 jQuery 变量或$(func()). 如果您觉得这个问题很奇怪，请不要因此而惩罚我，因为我只是因为被问到而询问。:)
回答by isNaN1247
You don't "declare" jQuery, you just include the file within a script tag:
你不“声明”jQuery，你只是在脚本标签中包含文件：
<script src="/locationof/jQuery.js"></script>
If you look in the jQuery sourceit appends itself to window.$and window.jQuerywhen it runs as the source code is in a self-executing anonymous function.
如果您查看jQuery 源代码，它会将自身附加到，window.$并且window.jQuery当它运行时，源代码在一个自动执行的匿名函数中。
(function( window, undefined ) {
// rest of source here
// Expose jQuery to the global object
window.jQuery = window.$ = jQuery;
})(window);
回答by Kath
We don't "declare" jQuery, we just add "reference" to the file where is this library in. For example:
我们不“声明”jQuery，我们只是在这个库所在的文件中添加“引用”。例如：
<script src="@Url.Content("~/Scripts/jquery-1.4.4.min.js")" type="text/javascript"></script>
That's it.
而已。
回答by defau1t
I guess he was assuming that you say using a $sign
我猜他是假设你说使用一个$标志
回答by matino
Perhaps he meant how to include it:
也许他的意思是如何包含它：
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
