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如何使用变量名执行函数?

jquery javascript

Martin AJ · 技术社区 · 7 年前

这是我的代码:

$(function(){
  function myfunc(){
    alert("executed");
  }
  
  var function_name = "myfunc";
  window[function_name]();
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

如您所见,该函数没有定义。为什么?我怎样才能让它工作?

3 回复 | 直到 7 年前

Timovski 7 年前

$(function(){
  window.myfunc = function(){
    alert("executed");
  };

  var function_name = "myfunc";
  window[function_name]();
})

Nina Scholz 7 年前

window

function myfunc(){
    alert("executed");
}

$(function(){
    var function_name = "myfunc";
    window[function_name]();
    window.foo = _ => console.log('foo');
    window.foo();
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Scott Marcus 7 年前

window

// Immediately-Invoked Function Expression (IIFE)
// that keeps all of its contents out of the Global scope
(function(){

  let functionHolder = {
    someFunction : function(){ console.log("You did it!"); }
  };

  // Set up a variable that has the same name as the function
  let funcName = "someFunction";

  // Call the function via the object
  functionHolder[funcName]();

})()