<\/span><\/h2>\n\n\n\nThe includes() function checks if a string contains a substring and returns True if the string is present. Else it returns False. It is available in every string and you can call it directly as shown below. Here is its syntax.<\/p>\n\n\n\n
string.includes(substring)<\/pre>\n\n\n\nHere are some examples to check if one string contains another. You can use it with literal strings or string variables.<\/p>\n\n\n\n
console.log('good morning'.includes('good')) \/\/ true
var a='good morning';
var b='good';
var res =a.includes(b);
console.log(res) \/\/ true
var a='good morning';
var b='food';
var res =a.includes(b);
console.log(res) \/\/ false
<\/pre>\n\n\n\nIn the first example, we check if a literal substring ‘good’ is present in another literal string ‘good morning’, which returns true. In second example, we check if one string variable is present in another string, which also returns true. In third case, we get false because the substring ‘food’ is not present in the original string.<\/p>\n\n\n\n
Includes() function will allow you to directly check if a string contains substring.<\/p>\n\n\n\n