JS Create object

1. Factory mode

        functionCreateperson (name, age, job) {varo =NewObject (); O.name=name; O.age=Age ; O.job=job; O.sayname=function() {alert ( This. Name);            }; returno; }        varPerson1 = Createperson ("Nicholas", "Software Engineer"); varPerson2 = Createperson ("Greg", "Doctor");

2. Constructor mode

        functionPerson (name, age, job) { This. Name =name;  This. Age =Age ;  This. Job =job;  This. Sayname =function() {alert ( This. Name);        }; }        varPerson1 =NewPerson ("Nicholas", "Software Engineer"); varPerson2 =NewPerson ("Greg", "Doctor"); //different points from the factory model        //1. No display of the created object        //2. Assigning properties and methods directly to this        //3. No Return statement        //4. Creating Objects with new        //How to use        //1. Use as a constructor        varperson =NewPerson ("Nicholas", "Software"); Person.sayname ();//Nicholas        //2. As a normal function callPerson ("Yellow", "Doctor"); Window.sayname ();//Doctor        //3. Called in the scope of another object        varo =NewObject (); Person.call (O,"King", "Nurse"); O.sayname ();//King                //Cons: Each method is recreated on each instance

3. Prototype mode

        functionPerson () {} Person.prototype.name= "Yellowshorts"; Person.prototype.age= 29; Person.prototype.job= "Software"; Person.prototype.sayName=function() {alert ( This. Name); }        varPerson1 =NewPerson (); Person1.sayname ();//Yellowshorts        varPerson2 =NewPerson (); Person2.sayname ();//YellowshortsAlert (Person1.sayname= = Person2.sayname);//true

JS Create object