//北京是getZoneTime(8),纽约是getZoneTime(-5),班加罗尔是getZoneTime(5.5). 偏移值是本时区相对于格林尼治所在时区的时区差值functiongetZoneTime(offset){//取本地时间varlocaltime =newDate();//取本地毫秒数varlocalmesc =localtime.getTime();//取本地时区与格林尼治所在时区的偏差毫秒数varlocalOffset =...
setTimeout(function () { alertBox.style.opacity = 0 setTimeout(function () { alertBox.parentNode.removeChild(alertBox) }, 300) }, 2000) }, /* * 确认框 水平垂直居中提示 * callback执行的函数,传递true与false */ showConfirm: function (message, backgroundColor, textColor, callback) { let...
constmyDate=newDate("Jul 21, 2013");constdayOfMonth=myDate.getDate();constmonth=myDate.getMonth();constyear=myDate.getFullYear();functionpad(n){returnn<10?'0'+n:n}constddmmyyyy=pad(dayOfMonth)+"-"+pad(month+1)+"-"+year;// "21-07-2013" 1. 2. 3. 4. 5. 6. 7. 8. 9...
(8)getTimezoneOffset函数:返回此地区的时差(当地时间与GMT格林威治标准时间的地区时差),单位为分钟。 function TZDemo() { var d, tz, s = "The current local time is "; d = new Date(); tz = d.getTimezoneOffset(); if (tz < 0) s += tz / 60 + " hours before GMT"; else if (tz...
functioncountdown(time) {// 在这里编写代码}countdown(5); 参考答案: functioncountdown(time) {letcurrent = time;constinterval =setInterval(() =>{ current--;if(current >0) {console.log(current); }else{console.log("Done");clearInterval(interval); ...
function strict(){ "use strict"; return "这是严格模式。"; } function notStrict() { return "这是正常模式。"; } 1. 2. 3. 4. 5. 6. 7. 3.3 脚本文件的变通写法 因为第一种调用方法不利于文件合并,所以更好的做法是,借用第二种方法,将整个脚本文件放在一个立即执行的匿名函数之中。
functiontime(){ vardate=newDate(); varyear=date.getFullYear(); varmonth=date.getMonth()+1; varday=date.getDate(); varweek=date.getDay(); week="星期"+"日一二三四五六".charAt(week); /*switch(week){ case1: week="星期一"; break; case2: week="星期二"; break; case3: week="星...
function isDigit(value) { var patrn = /^[0-9]*$/; if (patrn.exec(value) == null || value == "") { return false } else { return true } } 10.设置cookie值 function setCookie(name, value, Hours) { var d = new Date(); var offset = 8; var utc = d.getTime() + (d.get...
Most of the time, you can avoid using thenewkeyword in JavaScript. Function Hoisting Earlier in this tutorial, you learned about "hoisting" (JavaScript Hoisting). Hoisting is JavaScript's default behavior of movingdeclarationsto the top of the current scope. ...
getFullYear() + "-" + month + "-" + currentDate; } } } 4、节流函数 throttle 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /** * 节流 */ function throttle(fn, wait = 500, isImmediate = false) { let flag = true; if (isImmediate) { return function() { if (flag) { ...