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VOOZH | about |
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VOOZH | about |
An object in JavaScript is a data type that is composed of a collection of names or keys and values, represented in name:value pairs. The name:value pairs can consist of properties that may contain any data type — including strings, numbers, and Booleans — as well as methods, which are functions contained within an object.
Objects in JavaScript are standalone entities that can be likened to objects in real life. For example, a book might be an object which you would describe by the title, author, number of pages, and genre. Similarly, a car might be an object that you would describe by the color, make, model, and horsepower. JavaScript arrays are also a type of object.
Objects are an integral and foundational aspect of most JavaScript programs. For example, a user account object may contain such data as usernames, passwords, and e-mail addresses. Another common use case is a web shopping platform’s shopping cart that could consist of an array of many objects containing all the pertinent information for each item, such as name, price, and weight for shipping information. A to-do list is another common application that might consist of objects.
In this tutorial, we will review how to create an object, what object properties and methods are, and how to access, add, delete, modify, and loop through object properties.
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JavaScript is a high-level, object-based, dynamic scripting language popular as a tool for making webpages interactive.
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Community and Developer Education expert. Former Senior Manager, Community at DigitalOcean. Focused on topics including Ubuntu 22.04, Ubuntu 20.04, Python, Django, and more.
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This is a nice primer, thanks!
This explains a lot ,but I don’t really understand the “$” in the code
gimli.fight = function() {
return Gimli attacks with an ${this.weapon}.;
}
I would appreciate if it could be explained or if I could be directed to where it is futher explained, Thanks
Written very simple, but very powerful. Excellent write-up I would say. Urges me to continue reading.
Nice article, the language is very simple and everyone can understand it. Thanks!
hello,
how could you create another instance of gimli object in a arry form such as: gimli[0][“weapon”]…,gimli[1]["weapon]…?
thank you
Simple and straightforward. Thanks.
Really great article. One thing I’m struggling with is if I have two objs and I use the for … in loop to iterate through say obj2 to verify if any properties in obj2 aren’t in/but should be in obj1, how i would add the obj2 property to obj1. … in doing so, i want to add the obj2 key and value to obj1
eg. function extend(obj1, obj2) { for(var key in obj2) { if(!obj1[key]) { …
you really have a nice way in Explaining things , keep it up . this is an awesome tut.
Excellent and well written. Thank you!
Why can we not use ‘.’ notation for accessing elements in the for…in loop?
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