将函数名称作为参数传递给另一个函数 [英] Passing function name as a parameter to another function

问题描述

我在.aspx页面上从客户端调用Web服务，我想调用一个关于此服务成功的函数。

I am calling a web services from client side on .aspx page, and I want to call a function on the success of this service.

函数名称将作为参数传递给此函数，该函数将动态更改。

The name of function will be passed as a parameter to this function, which will dynamically change.

我这样传递：

function funName parm1, parm2, onSucceedCallFuntion

function onSucceedCallFuntion(result)
//doing something here.    

也许是因为它是一个字符串是无法调用成功函数的原因

Perhaps because it's a string is why the "succeed" function could not be called

function funName(parm1, par2, onSucceedFunName) {
    $.ajax({
        url: "../WebServices/ServiceName.asmx/ServiceFunName",
        data: JSON.stringify({
            parm1: parm1,
            par2: par2
        }), // parameter map  type: "POST", // data has to be POSTED                
        contentType: "application/json",
        dataType: "json",
        success: onSucceedFunName,
    });

function onSucceedFunName() {}

推荐答案

如果你将函数的名称作为字符串传递，你可以试试这个：

If you're passing the name of the function as a string, you could try this:

window[functionName]();

但是假设该函数在全局范围内。另一种更好的方法是只传递函数本身：

But that assumes the function is in the global scope. Another, much better way to do it would be to just pass the function itself:

function onSuccess() {
    alert('Whoopee!');
}

function doStuff(callback) {
    /* do stuff here */
    callback();
}

doStuff(onSuccess); /* note there are no quotes; should alert "Whoopee!" */

编辑

如果需要将变量传递给函数，可以使用函数将它们传递给。这就是我的意思：

If you need to pass variables to the function, you can just pass them in along with the function. Here's what I mean:

// example function
function greet(name) {
    alert('Hello, ' + name + '!');
}

// pass in the function first,
// followed by all of the variables to be passed to it
// (0, 1, 2, etc; doesn't matter how many)
function doStuff2() {
    var fn = arguments[0],
        vars = Array.prototype.slice.call(arguments, 1);
    return fn.apply(this, vars);
}

// alerts "Hello, Chris!"
doStuff2(greet, 'Chris');

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