如何在JavaScript中运行随机选择的函数？ [英] How to run a randomly selected function in JavaScript?

问题描述

我正在尝试运行一个随机函数，但还没有弄明白：

I'm trying to run a random function but haven't quite figured it out:

<script>

function randomFrom(array) {return array[Math.floor(Math.random() * array.length)];}

function randomchords(){randomFrom(['poop()', 'poop2()', 'poop3()']);}               



function poop() { $(function() {ionian_c_vi() });  }                          

function poop2() {  $(function() {ionian_c_iii() }), $(function() {ionian_c_iv() });  }                      

function poop3() { $(function() {ionian_c_vi() }), $(function() {ionian_c_i() }), $(function() {ionian_c_ii() });  }  

</script>

然后：

<button onclick="randomchords()" >Get some random chords</button>

我是否走在正确的轨道上？

Am I on the right track?

推荐答案

一种选择是使用窗口对象：

function randomchords() {
    var func = randomFrom(['poop', 'poop2', 'poop3']);
    window[func]();
}

注意你应该从数组中的函数名中删除括号。

Pay attention that you should remove parentheses from function names in the array.

另一种选择是从上面的变体中删除引号并直接调用函数：

Another option is to remove quotes from the variant above and call functions directly:

function randomchords() {
    var func = randomFrom([poop, poop2, poop3]);
    (func)();
}

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