if(isNaN(psDay)==true) { returnfalse; } if(sDay=="") { returntrue; } if(sDay.match(/[^0-9]/g)!=null) { returnfalse; } varnDay=parseInt(psDay,10); if((nDay<0)||(31<nDay)) { returnfalse; } returntrue; } functionIsValidDate(psYear, psMonth, psDay) { if(psYear==n...
// Declaring valid date character, minimum year and maximum year vardtCh="/"; varminYear=1900; varmaxYear=2100; functionisInteger(s){ vari; for(i = 0; i < s.length; i++){ // Check that current character is number. varc = s.charAt(i); if(((c <"0") || (c >"9")))retu...
在JavaScript中验证日期,可以使用Date对象和正则表达式。 使用Date对象 可以创建一个Date对象,并使用其方法来验证日期。例如,可以使用以下代码来验证日期是否有效: 代码语言:javascript 复制 functionisValidDate(dateString){constdate=newDate(dateString);return!isNaN(date.getTime());} ...
var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ('-')+1); var OneYear = DateOne.substring(0,DateOne.indexOf ('-')); var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ('-')); var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ('-')+1);...
日期类型函数(Date Functions) 逻辑判断型函数(Logic Functions) 特殊的函数(Special Functions) 文件处理类函数(File Functions) 字符串类型函数(String Functions) 顾名思义,字符串类型的函数肯定是针对字符串类型的参数、变量进行处理操作的函数 日期转字符串(date2str) 日期转字符串函数date2str主要有4个方法,分别...
prototype, 'init', { enumerable: false, value: function () { 'use strict'; if (new.target) { throw new TypeError('init is not a constructor'); } var fun = function () { console.log(this.name); } fun.call(this); } }) 解析:此题的关键在于是否清楚 ES6 的 class 和普通构造...
new Date()Creates a new Date object constructorCreates a new Date object constructorReturns the function that created the Date prototype getDate()Returns the day of the month (from 1-31) getDay()Returns the day of the week (from 0-6) ...
is.colour(hex) Check if hex is a hexadecimal colour code. is.date(date, regExp) Check if string date is in a date format (regExp optional). is.element(elm) Check if elm is a DOM element. is.email(email, regExp) Check if string email is a valid email address (regExp optional)....
// bad if (isValid === true) { // ... } // good if (isValid) { // ... } // bad if (name) { // ... } // good if (name !== '') { // ... } // bad if (collection.length) { // ... } // good if (collection.length > 0) { // ... }15.4...
The toLocaleString() method returns a Date object as a string, using locale settings. The default language depends on the locale setup on your computer. Browser Support It is supported in all browsers: ChromeEdgeFirefoxSafariOperaIE YesYesYesYesYesYes ...