How to replace some preceding characters with a constant 4 asterisks and display the last 3 as well - JavaScript?

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07-10-2020
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Question

How to replace some preceding characters with a constant 4 asterisks and display the last 3 as well - JavaScript?

Javascript Web Development Front End Technology Object Oriented Programming

Let’s say the following are our values −

'6778922'
'76633 56 1443'
'8888 4532 3232 9999'

We want the preceding characters to be replaced with 4 asterisks and the display rest of the last 3 characters. The output should be −

**** 922
**** 443
**** 999

For such conditions, use the replace() and set regex in it.

Example

Following is the code −

const hideDataWithDot = value => value.replace(/.+(.{3})$/, "**** $1");
console.log(hideDataWithDot('6778922')) 
console.log(hideDataWithDot('76633 56 1443')) 
console.log(hideDataWithDot('8888 4532 3232 9999'))

To run the above program, use the following command −

node fileName.js.

Here, my file name is demo236.js.

Output

The output is as follows −

PS C:\Users\Amit\javascript-code> node demo236.js
**** 922
**** 443
**** 999

AmitDiwan

Published on 03-Oct-2020 18:41:14

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