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If the purpose of the if statement is to check for null or undefined values before assigning a value to a variable, you can make use of the Nullish Coalescing Operator. According to the data from caniuse , it should be supported by around 85% of the browsers(as of January 2021).
So, you can use it to check whether the object is null or not. Check for null values. let testA = null; //null //console.log(Object.is(testA, null)); //true //null === null if(Object.is(testA, null)) { console.log("This is a Null Value"); } Output: This is a Null Value let x = null; if (x === null) { console.log("x is null"); } Output: x is null
29 lis 2022 · How to Check for Null in JavaScript with Equality Operators. The equality operators provide the best way to check for null. You can either use the loose/double equality operator (==) or the strict/triple equality operator (===).
28 sie 2024 · By this operator, we will learn how to check for null values in JavaScript by the (===) operator. This operator only passes for null values, not for undefined, false, 0, NaN. Syntax: x === y; Example: The following code snippets show some comparison of objects. JavaScript
28 cze 2023 · One way to check for null in JavaScript is to check if a value is loosely equal to null using the double equality == operator:
JavaScript uses the null value to represent a missing object. Use the strict equality operator ( === ) to check if a value is null . The typeof null returns 'object' , which is historical bug in JavaScript that may never be fixed.
25 wrz 2023 · The null value represents the intentional absence of any object value. It is one of JavaScript's primitive values and is treated as falsy for boolean operations.
