最多添加3个标签，每个标签最长6字，空格或逗号隔开

var  realName ,
shortDesc,
personLabel,
advantage,
max6 = [];
//最多添加3个标签，每个标签最长6字，空格或逗号隔开 getUserTag
$("form").delegate(".personLabel","blur",function (){
    personLabel = $(".personLabel").val();
    var labelArr = personLabel.replace(/(.)(?=[^$])/g,"$1,").split(",");//拆成数组
    labelArr.push(" ");//末尾加空格
   var newArr = [];
    var z ;
    for(var i=0;i<labelArr.length ;i++){
            if ((i > 0 && labelArr[i - 1] !== " " && labelArr[i - 1] !== ",") && (labelArr[i] == " " || labelArr[i] == "，") ) { //空格或者英文逗号隔开
                console.log("i=" + i);
                console.log("z=" + z);
                var a = labelArr.slice(z, i);
                z = i;
                var cc = a.join("");
                var zz = cc.replace(/(^\s*)/g,"");//去空格
                newArr.push(zz);
            }
    }
    console.log(newArr);
    //最多只要三个标签
   var maxTag =  newArr.slice(0,3); //截取三个
    //每个标签最多六个字
    for(var j=0;j<maxTag.length ;j++){
      var aa =  maxTag[j].slice(0,6);
        max6.push(aa);
    }
    console.log(max6);
});
//保存用户信息，
function save() {
    //ajax请求
    realName = $(".realName").val();
    shortDesc = $(".shortDesc").val();
    personLabel = max6;
    advantage = $(".desc").val();
    $.ajax({
        type: "POST",
        url: "/investManage/user/saveUserInfo.do?",
        data:"realName="+realName+"&shortDesc="+shortDesc+"&label="+personLabel+"&desc="+advantage,
        dataType:"json",
        success: function(obj){
            console.log(obj);
            if(obj.login){
                alert("保存成功");
                return false;
            }else if(obj.status=0){
                alert("保存失败");
            }
        }
    });
}
(function($){
    $.fn.extend({
        checkFrom:function(){
            this.delegate('input,textarea','blur',function(e){
                var _from = $(e.delegateTarget);
                var _this = $(this);
                var _reg  = _this.data('reg');
                var _regexp = new RegExp(_reg);
                _from.data('_isError',_from.data('_isError') || false );
                switch(_this.attr('type')){
                    case 'text':
                    case 'textarea':
                        if(!_regexp.test(_this.val())|_this.val()==''){  //空的时候
                            _this.css("border","red solid 1px");
                            _from.data('_isError',true );
                            alert(_this.data('error')); //提示
                        }
                        break;
                    case 'select':
                        break;
                }
                return false;
            }).delegate('input,select,textarea','focus',function(e){
                var _this = $(this);
                _this.css('border','blue solid 1px');
            }).on('submit',function(){
                var _this = $(this);
                _this.find('input').trigger('blur','a');//触发事件
                return !!!_this.data('_isError');
            });
        }
    });
    $("form").checkFrom();
})(jQuery);