JavaScript: String.prototype.includes
New in JS2015.
str.includes(searchString)
-
Return
true
if str contains searchString. Else, returnfalse
. str.includes(searchString , position)
-
Start search at position.
const ss = "abcd"; console.log(ss.includes("cd") === true); console.log(ss.includes("cd", 3) === false); console.log(ss.includes("x") === false);