原生js获取格式化的时间函数！

function formatDateTime() { var date = new Date(); //日期对象 var now = ""; now = date.getFullY

function formatDateTime() {    var date = new Date(); //日期对象    var now = "";    now = date.getFullYear() + "-"; //读英文就行了    now = now + (date.getMonth() + 1) + "-"; //取月的时候取的是当前月-1如果想取当前月+1就可以了    now = now + date.getDate() + " ";    now = now + date.getHours() + ":";    now = now + date.getMinutes() + ":";    now = now + date.getSeconds() + "";    return now ;    // document.getElementById("nowDiv").innerHTML = now; //div的html是now这个字符串    // setTimeout("show()", 1000); //设置过1000毫秒就是1秒，调用show方法}

优化，对于小时和分中不足10的情况，前面补 0：

function zh_now2(){    var date = new Date();    var year = date.getFullYear();    var month = date.getMonth();    var day = date.getDate();    var hour = date.getHours()<10?"0"+date.getHours():date.getHours();    var min = date.getMinutes()<10?"0"+date.getMinutes():date.getMinutes();    var sec = date.getSeconds()<10?"0"+date.getSeconds():date.getSeconds();    var timeStr = year +"年"+                  month+"月"+                  day+"日"+                  hour+"时"+                  min+"分"+                  sec+"秒";    return timeStr ;}