how to check not null in javascript

checking if a value is not null in javascript is a common task that helps ensure your code handles data properly. to check if a value is not null in javascript, you can use a simple comparison with the strict equality operator (`===`) or the not equal operator (`!==`).

here's a step-by-step tutorial on how to check if a value is not null in javascript with a code example:

1. using the strict equality operator (`===`):

in this example, we declare a variable `value` and assign it the value `null`. we then use an `if` statement to check if the value is not equal to `null` using the strict equality operator (`!==`). if the value is not null, it will print "value is not null"; otherwise, it will print "value is null".

2. using the not equal operator (`!==`):

in this example, we use the not equal operator (`!=`) to check if the value is not null. the `!=` operator performs type coercion, so it will consider `null` as equal to both `null` and `undefined`. if the value is not null, it will print "value is not null"; otherwise, it will print "value is null".

it's generally recommended to use the strict equality operator (`===`) for checking null values to avoid unexpected type coercion behavior.

by following these steps and examples, you can easily check if a value is not null in javascript and handle your data effectively in your code.

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