java script string contains code example
Example 1: javascript string contains
var string = "foo",
substring = "oo";
console.log(string.includes(substring));
Example 2: javascript string includes
'Blue Whale'.includes('blue') // returns false
Example 3: javascript contains substring
var str = "We got a poop cleanup on isle 4.";
if(str.indexOf("poop") !== -1){
alert("Not again");
}
//use indexOf (it returns position of substring or -1 if not found)
Example 4: string.contains javascript
var str = "We got a poop cleanup on isle 4.";
if(str.indexOf("poop") !== -1){
alert("Not again");
}