To check for exactly an empty string, compare for strict equality against "" using the === operator: // strValue was empty string. To check for not an empty string strictly, use the !== operator: // …

Jul 5, 2022 · It is very simple to check if a string is empty. We can use two major methods that are somewhat similar because we will use the strict equality operator (==). In this first method, we …

If you want to know if it's an empty string use === instead of ==. if(variable === "") { } This is because === will only return true if the values on both sides are of the same type, in this case …

May 3, 2023 · In this article, we've learned how to check whether a string is empty or null in JavaScript. We've explored different methods for doing so, such as using the if statement and …

Nov 17, 2024 · Checking for an empty, undefined, or null string in JavaScript involves verifying if the string is falsy or has a length of zero. Here are different approaches to check a string is …

Jun 19, 2018 · It works for undefined, null and even '' value: console.log('null value'); console.log('undefined value'); console.log('blank value'); If we split the condition into its two …

When the string is not null or undefined, and you intend to check for an empty one, you can use the length property of the string prototype, as follows: Javascript empty string let emptyStr = ""; …

Mar 1, 2024 · Use the length property on the string to check if it is empty. If the string's length is equal to 0, then it's empty, otherwise, it isn't empty. The String.length property returns the …

Jun 23, 2023 · In JavaScript, you can use the strict equality operator (===) to check if a string is empty. This operator compares both the type and the value, so if a string is empty, it will return …

Mar 11, 2025 · Learn how to check for an empty string in JavaScript with various methods. This article covers simple techniques like using the length property, trim method, and logical NOT …