string includes another string javascript code example
Example 1: check for substring javascript
const string = "javascript";
const substring = "script";
console.log(string.includes(substring)); //true
Example 2: 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 3: js string contains
var string = "foo";
var substring = "oo";
console.log(string.indexOf(substring) !== -1);