Question

How to pad a string on the left in TypeScript

Answer 1

const str = "TS";
 
const padded: string = str.padStart(5, "*");
 
console.log(padded);  
 
 
 
/*
run:
 
***JS
 
*/

 

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Answer 2

console.log("TS".padStart(9));           
console.log("TS".padStart(9, "*"));     
console.log("TS".padStart(9, "123456"));  
 
 
 
/*
run:
 
"       TS" 
"*******TS" 
"1234561TS" 
 
*/

 

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Answer 3

const num = 17;
 
const paddedNum: string = String(num).padStart(5, "0"); 
 
console.log(paddedNum);
 
 
 
/*
run:
 
"00017" 
 
*/

 

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