JavaScript/jQuery - How to check if a string contain specific words

Question

$a = 'how are you'; if (strpos($a,'are') !== false) {     echo 'true'; } 

In PHP, we can use the code above to check if a string contain specific words, but how can I do the same function in JavaScript/jQuery?

Answer 1

you can use indexOf for this

var a = 'how are you'; if (a.indexOf('are') > -1) {   return true; } else {   return false; } 

Edit: This is an old answer that keeps getting up votes every once in a while so I thought I should clarify that in the above code, the if clause is not required at all because the expression itself is a boolean. Here is a better version of it which you should use,

var a = 'how are you'; return a.indexOf('are') > -1; 

Update in ECMAScript2016:

var a = 'how are you'; return a.includes('are');  //true