javascript remove leading zeros from string
use a regular expression like this
var strNumber = "0049";
console.log(typeof strNumber); //string
var number = strNumber.replace(/^0+/, '');javascript remove leading zeros from string
use a regular expression like this
var strNumber = "0049";
console.log(typeof strNumber); //string
var number = strNumber.replace(/^0+/, '');js remove zeros after decimal
(+n).toFixed(2).replace(/(\.0+|0+)$/, '')
// 0 => 0
// 0.1234 => 0.12
// 0.1001 => 0.1
// 1 => 1
// 1.1234 => 1.12
// 1.1001 => 1.1
// 100 => 100
// 100.1234 => 100.12
// 100.1001 => 100.1remove leading characters in javascript
1. Using substring()
The substring() method returns the part of the string between the specified indexes, or to the end of the string.
let str = 'Hello';
str = str.substring(1);
console.log(str);
/*
Output: ello
*/
The solution can be easily extended to remove first n characters from the string.
let str = 'Hello';
let n = 3;
str = str.substring(n);
console.log(str);
/*
Output: lo
*/
___________________________________________________________________________
2. Using slice()
The slice() method extracts the text from a string and returns a new string.
let str = 'Hello';
str = str.slice(1);
console.log(str);
/*
Output: ello
*/
This can be easily extended to remove first n characters from the string.
let str = 'Hello';
let n = 3;
str = str.slice(n);
console.log(str);
/*
Output: lo
*/
__________________________________________________________________________
3. Using substr()
The substr() method returns a portion of the string, starting at the specified index and extending for a given number of characters or till the end of the string.
let str = 'Hello';
str = str.substr(1);
console.log(str);
/*
Output: ello
*/
Note that substr() might get deprecated in future and should be avoided.Copyright © 2021 Codeinu
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