How to replace leading zero with spaces - JavaScript
https://www.tutorialspoint.com/how-to-replace-leading-zero-with-spaces-javascript
Question
How to replace leading zero with spaces - JavaScript
We are required to write a JavaScript function that takes in a string that represents a number. Replace the leading zero with spaces in the number. We need to make sure the prior spaces in number are retained.
For example,
If the string value is defined as −
" 004590808"
Then the output should come as −
" 4590808"
Example
Following is the code −
const str = ' 004590808'; const replaceWithSpace = str => { let replaced = ''; const regex = new RegExp(/^\s*0+/); replaced = str.replace(regex, el => { const { length } = el; return ' '.repeat(length); }); return replaced; }; console.log(replaceWithSpace(str));
Output
This will produce the following output in console −
4590808
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