check if a string has a substring javascript code example
Example 1: check for substring javascript
const string = "javascript";
const substring = "script";
console.log(string.includes(substring));
Example 2: js string contais
const string = "foo";
const substring = "oo";
console.log(string.includes(substring));
Example 3: javascript contains substring
var str = "We got a poop cleanup on isle 4.";
if(str.indexOf("poop") !== -1){
alert("Not again");
}
Example 4: js string contains
var string = "foo";
var substring = "oo";
console.log(string.indexOf(substring) !== -1);