Zell Liew • 12/19/2018

Checking if an input is empty with JavaScript

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This article provides a practical guide to checking if a form input is empty using JavaScript. It explains how to validate inputs on user input or form submission events, demonstrates using the trim method to handle whitespace, and shows how to set visual states for valid/invalid inputs. It also addresses edge cases, like not invalidating a field the moment a user clears it.

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#JavaScript #dom #Form Validation
Checking if an input is empty with JavaScript

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