js implementation of obtaining SMS verification code example

This article mainly shares with you examples of js implementation for obtaining SMS verification codes. It is mainly shared with you in the form of code. I hope it can help you.

$(".form-data").delegate(".send","click",function
 () {
         var phone = $("#tel").val();
         if (phone == "") {
             alert('请先填写手机号')
             $("#tel").css("background-color","#ff2f28");
             return false;
         }
         $(this).hide();
         $.ajax({
             url: "/sendsms",
             type: "get",
             dataType: 'json',
             data: {phone: phone },
             async: false,
             success: function (data) {
                 console.log(data)
                 if (data.status == 0) {
                     settime();
                 } else {
                     alert(data.msg)
                     settime();
                 }
             },
             error: function () {
                 alert('网络忙');
                 settime();
             }
         });
     })
     var countdown = 120;
     function settime() {
         if (countdown == 0) {
             $(".time").attr("class","time hide");
             $(".time").text("<em>120</em>s");
             $(".send").css(&#39;display&#39;,&#39;block&#39;);
             countdown = 120;
             return false;
         } else {
             $(".time").removeClass(&#39;hide&#39;);
             $(".time").text("重新发送("+ countdown+"s)");
             countdown--;
         }
         setTimeout(function () {
             settime();
         }, 1000);
     }

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