Nov 24, 2009 · Usually I would expect a String.contains() method, but there doesn't seem to be one. What is a reasonable way to check for this?

16 ES6 contains inbuilt method (includes) in String's prototype, which can be used to check if string contains another string or not.

What is the most concise and efficient way to find out if a JavaScript array contains a value? This is the only way I know to do it: function contains (a, obj) { for (var i = 0; i < a.length;...

Oct 22, 2012 · Possible Duplicate: JavaScript: string contains I have a postcode variable and want to use JS to add a location into a different variable when the postcode is changed/entered. So for …

That doesn’t answer the question. When you wrote this answer, the title was “How to determine if Javascript array contains an object with an attribute that equals a given value?”. You’re checking if …

1168 This question already has answers here: How to check whether a string contains a substring in JavaScript? (3 answers)

Apr 7, 2011 · Pretty straight forward. In javascript, I need to check if a string contains any substrings held in an array.

Possible Duplicates: Check if text is in a string JavaScript: string contains I'm trying to check if a string I import into my application has a certain piece of text. I know how to do this w...

Mar 12, 2010 · This only truly solves the problem if all the JavaScript libraries or modules you use also do this. A Gotcha: Execution Scope in Browsers and Node.js While browser polyfills make sense, …

May 29, 2021 · I want to be able to scan to see if any part of the string contains any one of the elements in the array and so far, only the first solution works for me. If there is a modification in the .contains () …