How To
How to fix 'Cannot read properties of null (reading 'addEventListener')'
12/18/2024 7:19:05 AM 231
The `TypeError: Cannot read properties of null (reading 'addEventListener')` error occurs when you try to access a property or call a method, such as `addEventListener`, on a variable that is `null`.
What does !== mean in javascript
12/18/2024 7:14:13 AM 83
The `!==` operator in JavaScript is a strict inequality operator. It compares whether two values are not equal in both value and type, returning `true` if they are either not equal or of different types.
What is ternary operator in Javascript
12/18/2024 7:12:10 AM 61
The ternary operator, also known as the conditional operator, is a shorthand for an if-else statement in JavaScript. It takes three operands: a condition, a value to return if the condition is true, and a value to return if the condition is false.
How to use getElementById() in Javascript
12/18/2024 7:11:00 AM 131
The `getElementById()` method in JavaScript is used to select and retrieve an HTML element with a specified `id` attribute.
How to use for loop in Javascript
12/18/2024 7:07:26 AM 108
In JavaScript, a `for` loop is used to repeatedly execute a block of code a specific number of times.
How to use switch in Javascript
12/18/2024 7:05:22 AM 82
In JavaScript, the `switch` statement is used to perform different actions based on various conditions, similar to a series of `if...else` statements.
How to use .length in Javascript
12/18/2024 7:02:05 AM 113
In JavaScript, `.length` is a property that returns the number of items in an array or the number of characters in a string.
How to use `Object.values()` in JavaScript
12/18/2024 7:00:44 AM 100
The `Object.values()` method in JavaScript retrieves an array of an object's own enumerable property values, collecting all the values and returning them in array format.
How to use split() in Javascript
12/18/2024 6:57:17 AM 78
The `split()` method in JavaScript splits a string into an array of substrings, using a specified separator.
How to create a function Javascript
12/18/2024 6:54:36 AM 106
To create a function in JavaScript, you can use this simple syntax:
How to get milliseconds in Javascript
12/18/2024 6:45:55 AM 100
In JavaScript, you can get the current time in milliseconds using either `Date.now()` or the `getTime()` method of a `Date` object.
What is const in Javascript
12/18/2024 4:43:26 AM 133
`const` is a JavaScript keyword used to declare a variable whose value cannot be reassigned after initialization.
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