22 functions in javascript

javascript offers a variety of built-in functions that enhance its versatility and usability. key functions include `parseint` and `parsefloat` for converting strings to numbers, while `isnan` checks for non-numeric values. array manipulation is facilitated by methods like `push`, `pop`, `shift`, and `unshift`, which modify the array's length. higher-order functions such as `map`, `filter`, and `reduce` enable functional programming paradigms. for string manipulation, functions like `substring`, `split`, and `replace` are essential.

date and time handling is managed through the `date` object, allowing for date creation and formatting. the `settimeout` and `setinterval` functions are crucial for asynchronous programming, enabling delays and repeated executions. the `promise` object facilitates handling asynchronous operations, while `async` and `await` simplify working with promises. lastly, the `json` object provides methods for parsing and stringifying json data, essential for web applications. together, these functions form the backbone of javascript programming.
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