JavaScript相当于PHP的模具 [英] JavaScript equivalent of PHP’s die

问题描述

JavaScript中有类似死的东西吗？我试过休息，但不起作用：）

Is there something like "die" in JavaScript? I've tried with "break", but doesn't work :)

推荐答案

你只能如果标记它，则为块范围。例如：

myBlock: {
  var a = 0;
  break myBlock;
  a = 1; // this is never run
};
a === 0;

您不能在范围内的函数内中断块范围。这意味着你不能做类似的事情：

You cannot break a block scope from within a function in the scope. This means you can't do stuff like:

foo: { // this doesn't work
  (function() {
    break foo;
  }());
}

你可以用功能做类似的事情：

You can do something similar though with functions:

function myFunction() {myFunction:{
  // you can now use break myFunction; instead of return;
}}

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