TypeScript String padStart() method
The padStart() function, in TypeScript, serves as the opposite of padEnd() and allows you the add characters at the start of a string which is particularly used to format text or for aligning numbers.
Syntax:
string.padStart(targetLength: number, padString?: string): string
Parameters:
- targetLength: Here you have to pass the length you want the final string to be, after adding padding.
- padString (Optional): The characters used for padding. Defaults, to spaces (‘ ‘) if not specified.
Return Value:
Returns a new string of the specified targetLength with the padString applied at the left side(i.e. beginning) of the current string.
Example 1: To demonstrate the use of padding with spaces (Default).
Javascript
let originalString: string = "Hello" ; let paddedString: string = originalString .padStart(10); console.log(paddedString); |
Output:
Hello
Example 2: To demonstrate the use of padding with Zeros.
Javascript
let numberString: string = "123" ; let paddedNumber: string = numberString .padStart(5, "0" ); console.log(paddedNumber); |
Output:
00123
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