Answers for "js if string has"

if string javascript

if (typeof myVar === 'string') { /* code */ };

javascript string contains

var string = "foo",
    substring = "oo";

console.log(string.includes(substring));

angular string contains

const string = "foo";
const substring = "oo";

console.log(string.includes(substring));

javascript has string

const string = "Hello"
const substring = "llo"
console.log(string.includes(substring))