jQuery验证手机号码是否正确

html部分

看图说话

<div class="applyPart-code">
    <div id="ph-colose-code">
         <img src="./images/btn_del.png" alt="">
     div>
     <div class="ph-code">
         <div class="ph-code-phone">
             <div class="ph-code-phone-conetnt">
                 报名手机
                 <input type="text" id="ph-phone" placeholder="请输入手机号">
             div>
             
             <p id="ph-phone-fu" class="isApply">p>
         div>
         
         <div class="ph-code-get">
             <div class="ph-code-get-left">验证码div>
             <div class="ph-code-get-right">
                 <div class="ph-code-get-right-text"><input type="text" placeholder="请输入验证码" id="">div>
                 <div class="ph-code-get-right-code">获取验证码div>
             div>
         div>
     div>
     <div class="ph-confirm">
         确定
     div>
 div>

jquery部分

// 点击确定提交手机号
 $('.ph-confirm').on('click',function(){
     
      var phone = $('#ph-phone').val()
      var flag = false;
      // 电话包括移动 联通  电信
      var myreg=myreg = /^(((13[0-9]{1})|(14[0-9]{1})|(17[0]{1})|(15[0-3]{1})|(15[5-9]{1})|(18[0-9]{1}))+\d{8})$/;
      var message = "";
      if(phone == ''){
     
           message = "手机号码不能为空！";
           $('#ph-phone-fu').text(message)
       }else if(phone.length !=11){
     
           message = "请输入有效的手机号码！";
           $('#ph-phone-fu').text(message)
       }else if(!myreg.test(phone)){
     
           message = "请输入有效的手机号码！";
           $('#ph-phone-fu').text(message)
       }else if(checkPhoneIsExist()){
     
           message = "该手机号码已经被绑定！";
           console.log(message)
           $('#ph-phone-fu').text(message)
       }else{
     
              return flag=true;
       }
  });
  //验证手机号是否存在
  function checkPhoneIsExist(){
     
       var phone = jQuery("#ph-phone").val();
       var flag = true;
       jQuery.ajax(
           {
      url: 后端接口,
               data:{
     phone:phone},
               dataType:"json",
                       type:"GET",
                       async:false,
                       success:function(data) {
     
                       var status = data.status;
                       if(status == "0"){
     
                           flag = false;
                       }
                   }
       });
       return flag;
   }