how to pad string js

ByAnurag batra June 30, 2022June 30, 2022

const str1 = '5';

console.log(str1.padStart(2, '0'));
// expected output: "05"

const fullNumber = '2034399002125581';
const last4Digits = fullNumber.slice(-4);
const maskedNumber = last4Digits.padStart(fullNumber.length, '*');

console.log(maskedNumber);
// expected output: "************5581"

Here is what the above code is Doing:
1. We’re using the slice() method to extract the last 4 digits of the credit card number.
2. We’re using the padStart() method to add the remaining digits back to the string, but replacing them with asterisks (*).
3. We’re using the length property to tell the padStart() method how many total characters the final output string should have.

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jquery open page in new tab

ByAnurag batra July 20, 2022June 30, 2022

var win = window.open(‘http://stackoverflow.com/’, ‘_blank’); if (win) { //Browser has allowed it to be opened win.focus(); } else { //Browser has blocked it alert(‘Please allow popups for this website’); } Here is what the above code is Doing: 1. It opens a new window with the URL http://stackoverflow.com/ 2. If the window is successfully opened,…

momentjs date and time string add minutes

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momentjs date and time string add minutes

ByAnurag batra August 4, 2022June 30, 2022

moment(date, “DD-MM-YYYY hh:mm:ss”) .add(10, ‘minutes’) .format(‘DD/MM/YYYY hh:mm:ss’); Here is what the above code is Doing: 1. We are using the moment() function to create a moment object from the date string. 2. We are using the add() function to add 10 minutes to the moment object. 3. We are using the format() function to format…

Javascript Examples

firebase get current user javascript

ByAnurag batra July 6, 2022June 30, 2022

var user = firebase.auth().currentUser; if (user) { // User is signed in. } else { // No user is signed in. } Here is what the above code is Doing: 1. We’re creating a variable called user and setting it equal to the current user. 2. We’re checking if the user is signed in. If…

Javascript Examples

add property to string js

ByAnurag batra July 23, 2022June 30, 2022

const s = ‘Hello world!’ s.user = ‘Jack’; // no error if used without ‘use-strict’ console.log(s.user); // undefined Here is what the above code is Doing: 1. We create a string variable s and assign it a value. 2. We try to add a property user to the string variable s. 3. We try to…

Javascript Examples

Javascript track mouse pointer

ByAnurag batra June 30, 2022June 30, 2022

var pointerX = -1; var pointerY = -1; document.onmousemove = function(event) { pointerX = event.pageX; pointerY = event.pageY; } setInterval(pointerCheck, 1000); function pointerCheck() { console.log(‘Cursor at: ‘+pointerX+’, ‘+pointerY); } Here is what the above code is Doing: 1. We’re creating a variable called pointerX and setting it to -1. 2. We’re creating a variable called…

Using “requireCordovaModule” to load non-cordova module “xcode” is not supported

Javascript Examples

Using “requireCordovaModule” to load non-cordova module “xcode” is not supported

ByAnurag batra July 14, 2022June 30, 2022

Install xcode: npm i xcode –save-dev Edit the plugin file locally plugins/cordova-plugin-firebase/scripts/ios/helper.js Add var xcode = require(“xcode”); on top Then in the same file, just remove this line var xcode = context.requireCordovaModule(“xcode”);. You must find two occurrence of this line. Here is what the above code is Doing: 1. Installing the xcode module 2. Editing…

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