Answer: Fastest way to check a string contain another substring in JavaScript?

answer re: Fastest way to check a string contain another substring in JavaScript?

Feb 23 '16

8

In ES6, the includes() method is used to determine whether one string may be found within another string, returning true or false as appropriate.

var str = 'To be, or not to be, that is the question.';

console.log(str.includes('To be'));       // true
console.log(str.includes('question'));    // true
console.log(str.includes('nonexistent')); // false

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