javascript indexof
//indexOf getting index of array element, returns -1 if not found
var colors=["red","green","blue"];
var pos=colors.indexOf("blue");//2
//indexOf getting index of sub string, returns -1 if not found
var str = "We got a poop cleanup on isle 4.";
var strPos = str.indexOf("poop");//9jvascript indexOf
let str = "Hello world, welcome to the universe.";
str.indexOf("welcome") // Returns 13
str.indexOf("Welcome") // Returns -1Copyright © 2021 Codeinu
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