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check whether a string contains a substring in JavaScript

JavaScript

​x
 
function checkSubstring(str, substr) {
    return str.indexOf(substr) !== -1;
}
​
console.log(checkSubstring('Hello World', 'World')); // true

🤖 Code Explanation

The code defines a function that takes in two strings as arguments. The function checks if the second string is a substring of the first string and returns true or false. In the example, the function returns true because 'World' is a substring of 'Hello World'.

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check whether a string contains a substring in JavaScript

JavaScript

🤖 Code Explanation

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