To check if a string contains substring or not, use the Javascript match method. Javascript match method accepts a regular expression as a parameter and if the string contains the given substring it will return an object with details of index, substring, input, and groups. ...
How do you check if one string contains a substring in JavaScript?Craig Buckler
在ECMAScript 5或更以前的环境下,可以使用String.prototype.indexOf,当找不到子字符串时,返回-1: var string = "foo"; var substring = "oo"; console.log(string.indexOf(substring) !== -1); 转载自:https://stackoverflow.com/questions/1789945/how-to-check-whether-a-string-contains-a-substring-...
1.slice() 2.截取字符串substring和substr 十四、替换字符串中的字符 十五、转换大小写 十六、打印单引号 十六、String 的扩展方法 一、模板字符串 一、去除字符串两侧空格 trim()不会去除字符串中间的空格 var str = " xi ao " var str1 = str.trim() console.log(str1)//xi ao 1. 2. 3. 一般用...
* @method isContainsString(string,subString,Case)*//** * isNum(string,scope) * @param string:string resource * @param scope:all,part*/varStringCheckUtil =function() {}; StringCheckUtil.prototype.isNum=function(string, scope) {//检验参数合法性if((arguments.length != 2) || (typeof(str...
},contains: function( what ) {/** * Returns boolean indicating whether * or not a substring exists within the string **/what = typeof what === 'string' ? what : what.toString();return this.indexOf( what ) > -1;},count: function( what ) {/**...
string.endsWith(substring, length) // length is optional and defaults // to string.length The return value is true or false if the string ends with the substring or not. Here's an example: const string = "Hello world" const check1 = string.endsWith("worl") // false const check2 =...
3. 组合使用其他字符串方法:与其他字符串方法(如trim(),split(),substring(),replace()等)配合,可以实现更复杂的文本处理逻辑。 constsentence="A quick brown fox jumps over the lazy dog.";constwordToFind="fox";constwords=sentence.split(' ');constisWordPresent=words.some(word=>word.includes(word...
console.log(check3); // false let check4 = sentence.includes(""); console.log(check4); // true Run Code Output true false false false true Also Read: JavaScript String indexOf() JavaScript Array includes() JavaScript Program to Check Whether a String Contains a Substring Share on: ...
pArray (pArray) pDelim (String) $x_CheckImageSrc(pId,pSearch) Checks an image (pId)sourceattribute for a substring (pSearch). The function returns true if a substring (pSearch) is found. It returns false if a substring (pSearch) is not found. ...