Share a php js real-time display time problem
本文给大家分享的是解决的php+js实时显示时间问题,主要是自己当时的理解有问题,也许大家有和我一样的情况,这里分享给大家
我们先来看下这段代码
$(function(){ setInterval(function(){ var timer = ''; $("#test").append(timer); },500); });
这段代码哪里有问题,为啥网页加载后网页一直是那个时间不会变呢?php和js的加载机制有啥不同?
这样是不对的,php代码在输出前被解释,浏览器收到的代码应该是这个样子的
$(function(){ setInterval(function(){ var timer = '2015-01-02 12:02:02'; $("#test").append(timer); },500); });
这样,当你定时更新的都是一个定值
修改如下
// 对Date的扩展,将 Date 转化为指定格式的String // 月(M)、日(d)、小时(h)、分(m)、秒(s)、季度(q) 可以用 1-2 个占位符, // 年(y)可以用 1-4 个占位符,毫秒(S)只能用 1 个占位符(是 1-3 位的数字) // 例子: // (new Date()).Format("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423 // (new Date()).Format("yyyy-M-d h:m:s.S") ==> 2006-7-2 8:9:4.18 Date.prototype.Format = function (fmt) { //author: meizz var o = { "M+": this.getMonth() + 1, //月份 "d+": this.getDate(), //日 "h+": this.getHours(), //小时 "m+": this.getMinutes(), //分 "s+": this.getSeconds(), //秒 "q+": Math.floor((this.getMonth() + 3) / 3), //季度 "S": this.getMilliseconds() //毫秒 }; if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length)); for (var k in o) if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length))); return fmt; } $(function(){ setInterval(function(){ var timer = new Date().Format("yyyy-MM-dd HH:mm:ss"); $("#test").append(timer); },500); });
以上就是本文的全部内容,更多相关教程请访问JavaScript视频教程!

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