JavaScript Validation: Length Check Tutorial (Part 1)

Web Reference: Novice JavaScript developers need to know that the "not not" operator is using implicitly the original loose comparison method instead of the exact or operators and also the hidden cast operation that is happening behind the scenes and I show it in the example I provide. Dec 11, 2008 · I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype.value. The nullish coalescing operator (??) in JavaScript only considers null or undefined as "nullish" values. If the left-hand side is any other value, even falsy values like "" (empty string), 0, or false, it will not use the right-hand side:

YouTube Excerpt: JavaScript Validation: Length Check Tutorial (Part 1) Greetings, today we are here with a JavaScript tutorial. We shall be doing a length check validation on a string. This can be useful if you want to control the size of the user's input. This will be a 4 part series. In this video we are covering how to check if the user has inputted a string of a specific length. If we set the desired length to be 5, if the user inputs a word that is 4 characters long, it will be invalid. If the user inputs a word that is 5 characters long, it will be a valid input. This could be useful for when asking the user for their postcode, phone number, pin, date of birth or credit card number as these can be fixed lengths. Thanks for watching this JavaScript length check tutorial. This tutorial is aimed at beginners. Wait for user input in JavaScript: https://www.youtube.com/watch?v=gCQtSbPGjZM Source code for waiting for user input in JavaScript: https://pastebin.com/MuMPBUp0 Subscribe to keep notified when I upload?: https://tinyurl.com/SubMaxODidily JavaScript Validation: Length Check Tutorial (Part 1)

JavaScript Validation: Length Check Tutorial (Part 1) Greetings, today we are here with a JavaScript tutorial. We shall be doing a length check...

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