Global_Objects/String/substring

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substring
		var anyString = 'Mozilla';

		// Displays 'Moz'
		console.log(anyString.substring(0, 3));
		console.log(anyString.substring(3, 0));

		// Displays 'lla'
		console.log(anyString.substring(4, 7));
		console.log(anyString.substring(4));
		console.log(anyString.substring(7, 4));

		// Displays 'Mozill'
		console.log(anyString.substring(0, 6));

		// Displays 'Mozilla'
		console.log(anyString.substring(0, 7));
		console.log(anyString.substring(0, 10));