jQuery每个方法不返回值 [英] jQuery each method does not return value

问题描述

$(document).ready(function() {

    $('#commentForm').submit(function(){

        return $('input[type=text], textarea').each(function(index){

            if($(this).attr('value') == ""){
                alert(msgHash[$(this).attr('id')]);
                return false;

            }else{

                if(!$(this).attr('value').match(validateHash[$(this).attr('id')])){
                    //Do nothing
                    alert(msgOnError[$(this).attr('id')]);
                    return false;
                }
            }
        });

        return true;
    });
});

这里是msgOnError，msgHash和msgHash的映射，我用来获取具有特定ID的每个文本框的消息 不幸的是，每种方法都不会返回false来取消提交表单.我究竟做错了什么 ??我是jQuery新手，谢谢

Here msgOnError, msgHash and msgHash are map that I use to get messages for each text box with particular ID Unfortunately each method does not return false to cancel submission of the form. What am I doing wrong ?? I am new to jQuery, Thanks

推荐答案

是的，这正是each的工作方式.由于实际上是在每次迭代中调用匿名函数的循环，因此退出这些函数也不会退出调用函数.在这里，返回true和false分别对应于for循环的continue和break.

Yes, that's exactly how each works. Since it's actually a loop that calls your anonymous function in each iteration, exiting those functions, will not exit the calling function as well. Returning true and false here, is actually corresponding to the continue and break of the for loop, repsectively.

您需要设置一个布尔标志，然后返回false(中断)，然后在each

You're gonna need to set a boolean flag, then return false (break), and then return the value of your boolean flag after the each

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