Call function via string?

Question

I have a string variable js_inject and I am looking for a way to call the js_inject() function via the string. Is there any way to do this other than the example below? I am really looking to do this without conditionals.

var myString = 'js_inject';

moderator(stringVar){
  if(stringVar == 'js_inject'){
   js_inject();
  }
}

moderator(myString);

Answer 1

如果是全局函数，则可以编写window[stringVar]() 。

Answer 2

您在全局范围内声明的函数将成为window对象的一部分，因此您应该可以调用此函数：

window['js_inject']();