JavaScript object definition and case Analysis
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Object definition
You can use characters to define and create JavaScript objects:
Example
Varperson= {firstName: "John", lastName: "Doe", age:50,eyeColor: "blue"}
Defining a JavaScript object can span multiple lines, and spaces and line wrapping are not required:
Example
Varperson= {
FirstName: "John"
LastName: "Doe"
Age:50
EyeColor: "blue"
}
Object attribute
It can be said that the JavaScript object is a container for variables.
However, we generally think that "JavaScript objects are containers for key-value pairs."
Key-value pairs are usually written as name:value (keys and values are separated by colons).
Key-value pairs are often referred to as object properties in JavaScript objects.
The JavaScript object is a container for property variables.
Object key-value pairs are written similar to:
Associative arrays in PHP
Dictionaries in Python
Hash Table in C language
Hash Mapping in Java
Hash tables in Ruby and Perl
Access object properties
You can access object properties in two ways:
Example 1
Person.lastName
Example 2
Person ["lastName"]
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