js substrr code example
Example 1: substr() javascript
const str = 'substr';
console.log(str.substr(1, 2));
console.log(str.substr(1));
console.log(str.substr(-3, 2));
console.log(str.substr(-3));
Example 2: js substr
var str = 'abcdefghij';
console.log('(1, 2): ' + str.substr(1, 2));
console.log('(-3, 2): ' + str.substr(-3, 2));
console.log('(-3): ' + str.substr(-3));
console.log('(1): ' + str.substr(1));
console.log('(-20, 2): ' + str.substr(-20, 2));
console.log('(20, 2): ' + str.substr(20, 2));