Shulou(Shulou.com)06/02 Report--

This article introduces the relevant knowledge of "how to use the object of JavaScript". Many people will encounter such a dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

In JavaScript, an object is a collection of data with properties and methods, an unordered collection of related data in the form of "key: value" pairs; defining object types requires the use of curly braces "{}" and syntax "{name1:value1,...,nameN:valueN}".

The operating environment of this tutorial: windows7 system, javascript1.8.5 version, Dell G3 computer.

In JavaScript, an object is a collection of data that has properties and methods, and is a container of named values called properties and methods. The data contained in the object can be accessed in two forms-properties and methods.

Object that is a reference data type. A reference or pointer to a value is provided for a variable that is assigned a reference value. The reference or pointer points to the location in memory where the object is stored. Variables do not actually store values.

An object (Object) type is an unordered set of keys and values. Curly braces {} are required to define the object type. The syntax format is as follows:

{name1: value1, name2: value2, name3: value3,..., nameN: valueN}

Name1, name2, name3,..., and nameN are the keys in the object, and value1, value2, value3,..., and valueN are the corresponding values.

In JavaScript, the keys of the object type are of string type, and the value can be any data type, such as a string, array, function, or other object. To get a value in an object, you can use the object name. The form of the key, as shown in the following example:

Var person = {name: 'Bob', age: 20, tags: [' js', 'web',' mobile'], city: 'Beijing', hasCar: true, zipcode: null, displayName: function () {[xss_clean] (this.name);}}; console.log (person.name); / / output Bobconsole.log (person.age) / / output 20 "how to use JavaScript objects" is introduced here, thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.