javascript - 我可以从其他文件中访问变量吗？(Can I access variables from another file?)

Question

Is it possible to use a variable in a file called first.js inside another file called second.js ?

(是否有可能使用在一个名为变量first.js称为另一个文件中second.js ？)

first.js contains a variable called colorcodes .

(first.js包含一个变量，名为colorcodes 。)

  ask by SAK translate from so

Answer 1

As Fermin said, a variable in the global scope should be accessible to all scripts loaded after it is declared.

(正如Fermin所说，全局范围中的变量应该可以被声明后加载的所有脚本访问。)

You could also use a property of window or (in the global scope) this to get the same effect.

(您也可以使用的属性window或（在全球范围内）， this得到同样的效果。)

// first.js
var colorCodes = {

  back  : "#fff",
  front : "#888",
  side  : "#369"

};

... in another file ...

(...在另一个文件中......)

// second.js
alert (colorCodes.back); // alerts `#fff`

... in your html file ...

(...在你的html文件中......)

<script type="text/javascript" src="first.js"></script> 
<script type="text/javascript" src="second.js"></script>