substring on string in javascript code example
Example 1: js substring
// the substring method returns a string out of another string
const str = 'Mozilla';
console.log(str.substring(1, 3));
// expected output: "oz"
console.log(str.substring(2));
// expected output: "zilla"
Example 2: javascript substring
// zero-based index, 'end' is excluded from result
myString.substring( start, end )