Check if string contains a substring in JavaScript
Question:
How to check if string contains a substring in JavaScript? Answer:
const myStr = 'A quick brown fox jumps over the lazy dog';
if (myStr.includes('fox')) {
console.log('fox found');
}Description:
The easiest way to check if a string contains a given substring is by using the includes() method of the String object:
mainString.includes(subString)The method makes a case-sensitive check so to make it case-insensitive you can write this:
mainString.toLowerCase().includes(subString)Reference:
JavaScript String includes reference
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Tags:
check, test, find, string, substring, contains, javascript Technical term:
Check if string contains a substring in JavaScript