如何将多个参数传递给javascript回调函数？

Javascript code:

function doSomething(v1,v2){ //blah; }

function SomeClass(callbackFunction,callbackFuncParameters(*Array*))={
   this.callback = callbackFunction;
   this.method = function(){
       this.callback(parameters[0],parameters[1])  // *.*
   }
}

var obj = new SomeClass( doSomething, Array('v1text','v2text') );

The problem is if I change function doSomething to

问题是如果我将函数doSomething更改为

function doSomething(v1,v2,v3){ //blah; }

I have to change the corresponding line (marked as //*.*) in SomeClass to

我必须在SomeClass中更改相应的行(标记为//*.*)

this.callback(parameters[0],parameters[1],parameters[2]);

What can be done to avoid the (*.*) line to be changed no matter how the number of 'doSomething' function's parameters is changed?

无论“doSomething”函数的参数数量如何变化,可以采取哪些措施来避免改变(*。*)行?

Thanks a lot!

非常感谢!

1 个解决方案

#1

You probably want to use the apply method

您可能想要使用apply方法

this.callback.apply(this, parameters);

The first parameter to apply indicates the value of "this" within the callback and can be set to any value.

要应用的第一个参数表示回调中“this”的值,可以设置为任何值。

#1