javascript string contains
var string = "foo",
substring = "oo";
console.log(string.includes(substring));
javascript string contains
var string = "foo",
substring = "oo";
console.log(string.includes(substring));
javascript array contains
var colors = ["red", "blue", "green"];
var hasRed = colors.includes("red"); //true
var hasYellow = colors.includes("yellow"); //false
javascript string includes
'Blue Whale'.includes('blue') // returns false
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)
javascript includes
const pets = ['cat', 'dog', 'bat'];
console.log(pets.includes('cat'));
// output: true
javascript includes
includes(searchElement)
includes(searchElement, fromIndex)
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