Str. If the returned value is not equal to -1, the string contains the substring. Str.includes('world') // output: false (boolean) SeptemTo check if a string contains a substring in JavaScript: Call the String.indexOf () method on the given string, passing it to the substring as a parameter. Str.includes('World') // output: true (boolean) The position in the string to start searching for searchStr. If match is NOT found, boolean false is returned.

If match is found, boolean true is returned. This method was introduced in EcmaScript 6 specification, therefore, support might not be great across different browsers (especially the old ones), so use with caution. In this article, we will focus on finding a substring within a string. How to check if one string contains in another string in js or jquery For example : String str1 asbf000.String str2 asbf Then ntains (str2) should return true.I tried using includes () in JS but did not work javascript jquery Share Improve this question Follow asked at 4:57 Raghavendra M.

This is an important distinction to draw between checking for a substring within a string and checking for a word within a string. Finding a substring in a string means that the string 'are', for example, will be matched even when it's found as a part of a word such as 'fare', 'dare', etc.

String contains js