首页手记 JavaScript短信验证码60秒倒计时插件

JavaScript短信验证码60秒倒计时插件

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JavaScript

该插件依赖于jquery，用于发送短信验证码后的60秒倒计时：

下载完整代码: 下载

下载后的完整实例包括:

插件完整源码

countdown.js：

$(function(){
	$(".captchaBtn").html('获取验证码').on("click", function(){
         var that = $(this);
		 var seconds = 60;
		 that.attr("disabled", true);
		 that.html(seconds+'秒');
	     let promise = new Promise((resolve, reject) => {
	      let setTimer = setInterval(
	        () => {
	          seconds -= 1;
	          // console.info('倒计时:' + seconds);
	          that.html(seconds+'秒');
	          if (seconds <= 0) {
	          	that.html('获取验证码');
	            resolve(setTimer)
	          }
	        }
	        , 1000)
	    })
	    promise.then((setTimer) => {
	       // console.info('清除');
	      clearInterval(setTimer);
	      that.attr("disabled", false);
	    })   
 
	})
});

如何使用

引入插件

<script class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="jquery-2.1.1.min.js" type="text/javascript"></script>
<script class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="countdown.js" type="text/javascript"></script>

需要依赖jquery