javascript“静态导入" [英] javascript "static imports"

问题描述

javascript中是否有任何等同于Java静态导入的内容?例如，如果我有一个Math看起来像

Is there anything in javascript that is the equivalent of java static imports? For example, if I have a Math class that looks like

com.example.Math = function() {

   function1(...) {}
   function2(...) {}

}

现在，其中一些功能自然地链接在一起，从而一个功能的输出就是另一个功能的输入.我可以做类似的事情

Now some of these functions are naturally chained together such that the output to one is the input to another. I can do something like

com.example.Math.function2(com.example.Math.function1());

这看起来有点丑陋，我真的很想做类似的事情:

This is a little ugly looking, and I would really like to do something like:

function2(function1())

但是我不想将function1和function2放在全局名称空间中.这可能吗?

But I don't want to put function1 and function2 in the global namespace. Is this possible?

推荐答案

是的.称为 with .

Yes, there is. It's called with.

with (com.example.Math) {
    function2(function1());
}

说:

不建议使用with，并且在ECMAScript 5中禁止使用with.

Using with is not recommended, and is forbidden in ECMAScript 5 strict mode. The recommended alternative is to assign the object whose properties you want to access to a temporary variable.

例如:

var m = com.example.Math;
m.function2(m.function1());

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