JavaScript typeof - W3Schools
ECMAScript 5 (2009) defined a new method for this: Array.isArray(): The instanceof operator returns true if an object is an instance of a specified object type: The typeof of an undefined …
Checking the type of an element in an array in Javascript
Nov 1, 2017 · the simple and easy trick to get an array type is the prototype: Object.prototype.isString.call (arr); var arr = [1,2,3]; …
How do I check if a variable is an array in JavaScript?
Apr 10, 2022 · There are several ways of checking if an variable is an array or not. The best solution is the one you have chosen. This is the fastest method on Chrome, and most likely all …
JavaScript TypeOf – How to Check the Type of a Variable or Object in JS
Nov 9, 2020 · JavaScript has a special operator called typeof which lets you get the type of any value. In this article, we will learn how typeof is used, along with a few gotchas to watch out for.
typeof - JavaScript | MDN - MDN Web Docs
Apr 3, 2025 · The typeof operator returns a string indicating the type of the operand's value.
javascript - How can I tell if it is an object or an array? - Stack ...
Apr 29, 2012 · Since ECMAScript 5 you can use the native method: Array.isArray( maybeArray ); If compatibility is of concern you can use Underscore.js or jQuery: _.isArray( maybeArray ); // …
JavaScript Typeof for Data Types: Array, Boolean and More
Apr 11, 2025 · The typeof operator in JavaScript checks and returns a string of the data type of a variable. It can return up to nine possible data types for JavaScript variables, including string, …
JavaScript Arrays - W3Schools
Arrays are a special type of objects. The typeof operator in JavaScript returns "object" for arrays. But, JavaScript arrays are best described as arrays. Arrays use numbers to access its …
JavaScript Type Checking – How to Check Type in JS with typeof()
Dec 9, 2022 · In this article, you will learn how to use the typeof operator, instances when you should not use typeof, and the best way to check type in JavaScript for such instances. In …
How to check a string data type is present in array using JavaScript ...
May 25, 2023 · In JavaScript, an array is a collection of data that can be of the same or different type. If we have the array containing the data, our task is to identify if it is a string data type. In …
- Some results have been removed