Summary of how js creates objects

This article summarizes the way js creates objects. Share it for your reference. The details are as follows:

The code copy is as follows:

<script type="text/javascript">

//1. Create an object through literals

var obj = {hobby:'basketball',girlf:'beauty'};

document.write(obj.hobby + ' and ' + obj['girlf']);

//2. Create objects through new Object, which is the system's own constructor

var obj2 = new Object({hobby:'basketball',girlf:'beauty'});//If no parameters are added, an empty object is returned. This creation method is basically not used

//3. The method of self-constructor is consistent with the second method. The difference is that the second type of Object is built on the system, and it is created here for itself.

function Dog(){

this.leg = 4;

this.bark = function(){

alert('Wow...');

};

}

var obj3 = new Dog();

alert(obj3.leg);

</script>

I hope this article will be helpful to everyone's JavaScript programming.