``` $("#getsmscode").click(function(e){ varphone\=$("#cellphone").val();             if (!/^1\\d{10}$/.test(phone)){ return$("#cellphone").focus(), layer.msg("请输入正确的手机号");             }     settime()         $.ajax({                     url:"{:url('api/users/sendsms')}",                     type:'post',                     data:{ 'mobile':phone                     },                     dataType:"JSON", success:function(res){                     }                      });                        }) varcountdown\=60;  functionsettime() {  varobj\=$("#getsmscode") if (countdown\==0) {  $("#getsmscode").removeAttr("disabled");   $("#getsmscode").text("获取验证码");  countdown\=60;  return;             } else {  $("#getsmscode").attr("disabled", true);  $("#getsmscode").text( countdown+"s后重新获取");             countdown\--;              }  setTimeout(function() {  settime();             }             ,1000);     } ```