Contains in javascript

Question

does "contains" condition exsist in javascript? or else how can i do it?

Answer 1

@Steano
It returns true if the string contains the sequence of chars, same as contains.

var str = "chars";

if(str.includes("ch"))
// has ch

You don't have to use an if, but thats one way of doing it. You could also do what @Daniele said, it's equavalent.

Answer 2

Yes, includes() is the same as contains.

Answer 3

The indexOf function is used for finding the occurance of a string within a string and returning the index of that string. example

r.indexOf(s) !== -1;

Answer 4

how can i use includes()?