js built-in object regular expression application example

This article mainly shares with you the application examples of regular expressions for built-in objects in js. It mainly explains it to you in the form of code. I hope it can help you.

//1、身份证正则表达式验证
    function checkIdNo(){ 
       var idno = $("#idno").val();
       //15位数身份证验证正则表达式：
       var isIDCard1=/^[1-9]\d{7}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{3}$/; 
       //18位数身份证验证正则表达式 ：
       var isIDCard2=/^[1-9]\d{5}[1-9]\d{3}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{3}([0-9]|X)$/;
    if(!(isIDCard1.test(idno)||isIDCard2.test(idno))){ 
          $("#idno").css("color","red");
          $("#idnocheck").css("color","red");
          $("#idnocheck").text('请输入正确的身份证号');
    }else{
          $("#idno").css("color","black");
          $("#idnocheck").text('格式正确');
          $("#idnocheck").css("color","green");     
          }
       }

    //2、电话正则表达式
    function checkPhone(){ 
      var phone = $("#cellphone").val();
    if(!(/^1[34578]\d{9}$/.test(phone))){ 
          $("#cellphone").css("color","red");
          $("#phone").css("color","red");
          $("#phone").text('请输入正确的电话号码, 格式：区号-号码 或 区号-号码-分机号');
    }else{
          $("#cellphone").css("color","black");
          $("#phone").text('格式正确');
          $("#phone").css("color","green");     
          }
     }               
    //3、邮箱正则
      function checkEmail(){ 
         var uEmail = $("#uEmail").val();
         var uEmailCheck =  /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/;   
    if(!(uEmailCheck.test(uEmail))){ 
          $("#uEmail").css("color","red");
          $("#uEmailCheck").css("color","red");
          $("#uEmailCheck").text('请输入正确邮箱');
    }else{
          $("#uEmail").css("color","black");
          $("#uEmailCheck").text('格式正确');
          $("#uEmailCheck").css("color","green");     
          }
       }       

   // 邮箱自动补全
     $("#uEmail").autocomplete({
        delay:0,
        //autoFoucs:true,
        source:function(request,response){
            var hosts = ['qq.com','163.com','126.com','sina.com.cn','263.com'],
                term = request.term, //获取用户输入的内容
                name =term,          //邮箱的用户名
                host ='',            //邮箱的域名
                ix = term.indexOf('@'),  //@的位置
                result = [];
                
            //当有@的时候，重新分配用户名和域名
            if(ix > -1){
                name =term.slice(0,ix);
                host = term.slice(ix+1);
            }
            if(name){
                //如果用户已经输入@和后面的域名，
                //那么就找到相关的提示，比如bnbbs@1,就提示bnbbs@163.com
                //如果用户还没有输入@，那就提示所有域名
                var findedHosts = [];
                if(host){
                    findedHosts = $.grep(hosts,function(value,index){
                        return  value.indexOf(host) > -1
                    });
                }else{
                    findedHosts =hosts;
                }
                var findedResult = $.map(findedHosts,function(value,index){
                    return name+'@'+value;
                })
                if(findedResult==''){
                    result.push(term)
                }

                result = result.concat(findedResult);
            }
            response(result);

        }
    });

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