== -1) { //String contains } To check for case insensitive string contains, use the regular expressions. Add suffix “i” after the string regular expression as shown. var actualstring = "Javascript Regular Exp"; var regexp = "javascript"; /regexp/i.test(actualstring); //return...
How do you check if one string contains a substring in JavaScript?Craig Buckler
2018-10-13 15:19 −#方法一:使用string.Contains方法 string.Contains是大小写敏感的,如果要用该方法来判断一个string是否包含某个关键字keyword,需要把这个string和这个keyword都转成小写或大写再调用Contains方法; 1 string key =... willingtolove
Check if a string includes "world": lettext ="Hello world, welcome to the universe."; letresult = text.includes("world"); Try it Yourself » More examples below. Description Theincludes()method returnstrueif a string contains a specified string. ...
JavaScript String includes() Theincludes()method returns true if a string contains a specified value. Otherwise it returnsfalse. Examples Check if a string includes "world": lettext ="Hello world, welcome to the universe."; text.includes("world"); ...
constmessage ="JavaScript is a fun programming language.";// regular expression that checks if message contains 'programming'constexp =/programming/; // check if exp is present in messageletresult = message.match(exp); console.log(result);/* ...
基本类型(null, undefined, bool, number, string)应该是值类型,没有属性和方法。 内置对象 Javascript 有一系列内置对象来创建语言的基本功能,具体有如下几种 Boolean Boolean 对象表示两个值:true或false。 当作为一个构造函数(带有运算符 new)调用时,Boolean() 将把它的参数转换成一个布尔值,并且返回一个包含...
affix('checkPosition') Events Bootstrap's affix plugin exposes a few events for hooking into affix functionality. Event TypeDescription affix.bs.affix This event fires immediately before the element has been affixed. affixed.bs.affix This event is fired after the element has been affixed. affix-...
5.luhnCheck:银行卡号码校验(luhn算法) Luhn算法的实现,用于验证各种标识号,例如信用卡号,IMEI号,国家提供商标识号等。 与String.prototype.split('')结合使用,以获取数字数组。获得最后一个数字。实施luhn算法。如果被整除,则返回,否则返回。 const luhnCheck = num => { ...
whiteList object Default value Object which contains allowed attributes and tags sanitizeFn null | function null Here you can supply your own sanitize function. This can be useful if you prefer to use a dedicated library to perform sanitization. Data attributes for individual tooltips Options for in...