String.prototype.padLeft() - mkloubert/jsToolbox GitHub Wiki
String.prototype.padLeft(len, pad) method
Returns a string with a minimum length with padding chars at the beginning.
Syntax
String.prototype.padLeft(len, pad);
Parameters
| Name | Type | Description |
|---|---|---|
| len | Number | The minimum length of the result string. |
| pad | String | [OPTIONAL] The custom padding string to use (is SPACE by default). |
Result
The new string.
Examples
var s = '5979';
// ' 5979'
var res1 = s.padLeft(9);
// '0005979'
var res2 = s.padLeft(7, '0');