()這里用的是input做的點(diǎn)擊發(fā)送驗(yàn)證碼<input type="number" class="input" name="mobile" placeholder="手機(jī)號(hào)" style="border: none"<input class="hui_kuang"style="width: 30%;text-align: center;height: 42px"onclick="setTime(this)" value='獲取驗(yàn)證碼'><script>　　//頁面初始化獲取倒計(jì)時(shí)數(shù)字（避免在倒計(jì)時(shí)時(shí)用戶刷新瀏覽器導(dǎo)致倒計(jì)時(shí)歸零） var $getCodeInput = $(".hui_kuang"); var sessionCountdown = sessionStorage.getItem("countdown"); if (!sessionCountdown) {  $(".hui_kuang").val("獲取驗(yàn)證碼") } else {  $(".hui_kuang").val("重新發(fā)送(" + sessionCountdown + ")");  setCode($getCodeInput, sessionCountdown); } //獲取驗(yàn)證碼 function setTime() {  var remobile = $("#registForm input[name='mobile']").val();  if (!remobile) {   alert("請(qǐng)輸入手機(jī)號(hào)碼")   return;  }  if (!(/^1[3|4|5|8][0-9]/d{4,8}$/.test(remobile))) {   alert("請(qǐng)輸入有效的手機(jī)號(hào)碼")   return;  } else {   setCode($getCodeInput, 60);  } } //發(fā)送驗(yàn)證碼倒計(jì)時(shí) function setCode($getCodeInput, countdown) {  if (countdown == 0) {   $getCodeInput.attr('disabled', false);//   $getCodeInput.removeAttribute("disabled");   $getCodeInput.val("獲取驗(yàn)證碼");   sessionStorage.removeItem("countdown");   return;  } else {   $getCodeInput.attr('disabled', true);   $getCodeInput.val("重新發(fā)送(" + countdown + ")");   countdown--;  }  sessionStorage.setItem("countdown", countdown);  window.setTimeout(function () {   setCode($getCodeInput, countdown);  }, 1000); }</script>