check if string in string javascript code example

Example 1: if string javascript

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

Example 2: check for substring javascript

const string = "javascript";
const substring = "script";

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

Example 3: javascript string contains

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

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

Example 4: js string contais

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

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

Example 5: javascript string includes

'Blue Whale'.includes('blue')  // returns false

Example 6: angular string contains

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

console.log(string.indexOf(substring) !== -1);