In order to know if a particular String contains a given word or a substring you can make use of the indexOf() method in JavaScript
String.prototype.indexOf(): The indexOf method will return the index of the calling String object, it will return the first occurrence of the provided substring value. It will return -1 if the provided substring is not found.
Example:<h2>JavaScript Substring example:</h2>
<div id="myString1">This is some text and i want to find if the work
apple is in this string or not!</div>
<br/>
<div id="myString2">This string does not contains that word!</div>
var val1 = document.getElementById("myString1").innerHTML.indexOf("apple");
var val2 = document.getElementById("myString2").innerHTML.indexOf("apple");
if(val1 > -1) {
console.log("myString1 contains the word apple!");
} else {
console.log("myString1 does not contain the word apple!")
}
if(val2 > -1) {
console.log("myString2 contains the word apple!");
} else {
console.log("myString2 does not contain the word apple!")
}
Output:
"myString1 contains the word apple!"
"myString2 does not contain the word apple!"
Check out jsfiddle: https://jsfiddle.net/9h3zcd0q/
More Posts related to JavaScript,
- How to Run JavaScript on Mac Terminal
- Get Current time in GMT/UTC using JavaScript
- How to yarn reinstall all Packages
- [javaScript] Convert text case to lowercase
- Get Device Screen Width and Height using javaScript
- Fix - npm start: sh: index.js: command not found
- npm WARN saveError ENOENT: no such file or directory, open /mnt/c/package.json
- JavaScript : Get url protocol HTTP, HTTPS, FILE or FTP
- JavaScript: Convert an Image into Base64 String
- JavaScript : Get current page address
- How to get query string in JavaScript HTML location.search
- Create React App using npm command with TypeScript
- JavaScript: Count Words in a String
- Add Animated Scrolling to Html Page Title Script
- How to send email from JavaScript HTML using mailto
- Javascript convert text case from uppercase to lowercase
- Submit html form on dropdown menu value selection or change using javascript
- Send Extra Data with Ajax Get or Post Request
- Fix: SyntaxError: The requested module does not provide an export named default
- Examples: Convert String to int in JavaScript
- 10 ways to Convert String to a Number in JavaScript
- Excel Fix: SECURITY RISK Microsoft has blocked macros from running because the source of this file is untrusted.
- Fix: ReferenceError: require is not defined in ES module scope [Node]
- [JavaScript] Remove all Newlines From String
- How to detect Browser and Operating System Name and Version using JavaScript
More Posts:
- How to turn off Dark theme in Excel for Mac - Microsoft
- How to turn off Location Services macOS Ventura 13 - MacOS
- Set Environment Variable in PowerShell for Mac - Powershell
- Difference Between Predicate and Function in Java 8 - Java
- Merge multiple zip files without unzipping (extracting) - HowTos
- Java Jackson with Maven Example - Java
- How to Set Homepage on Chrome - Chrome
- How to enable disable SharePoint Developer Dashboard for tracing troubleshooting - SharePoint