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"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"js get first 3 characters of string
const string = "0123456789";
console.log(string.slice(0, 2)); // "01"
console.log(string.slice(0, 8)); // "01234567"
console.log(string.slice(3, 7)); // "3456"javascript substr vs substring
let demo = 'This is a normal sentence';
// substr
// The substr method takes two parameters
// param 1 - the starting index to copy from a string
// param 2 - the number of characters that must be copied from the starting index
let newDemo = demo.substr(3, 5);
// newDemo would be 's is '
// substring
// The substring method takes 1 mandatory and 1 optional parameter
// param 1 - the starting index to copy from a string
// param 2 - (optional) the ending index that will be copied until from the starting index.
// - it will not include the ending index position
// - if this param is left blank. it defualts to the rest of the string
let newDemo = demo.substring(0, 3);
// newDemo would be 'Thi'
let newDemo = demo.substring(3);
// newDemo would be 's is a normal sentence'substring javascript
var str = "Hello world!";
var res = str.substring(1, 4); //ellsubstr() javascript
const str = 'substr';
console.log(str.substr(1, 2)); // (1, 2): ub
console.log(str.substr(1)); // (1): ubstr
/* Percorrendo de trás para frente */
console.log(str.substr(-3, 2)); // (-3, 2): st
console.log(str.substr(-3)); // (-3): strsubstring in javascript
let str = "abcdefghi"
// index-> 012456789
// str.slice(±start, ±end)
console.log(str.slice(2, 5)) // cde
console.log(str.slice(-5, -3)) // ef
// str.subString(+start, +end) // can't take -ve index
console.log(str.substring(2, 5)) // cde
console.log(str.substring(5, 2)) // cde
// str.substr(±start, length)
console.log(str.substr(2, 5)) // cdefgCopyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
