javascript_loop and methods

A=["sameer",12,"gurgram",59.98,34]; 

A.forEach((e,index,a) => {

//     console.log(e+"..."+index+"..."+a);

// });

for(value of A){

    console.log(value);

const students={

"name":"ankit",

"lastname":"joshi",

"rollno":12,

fullname:function(){

   console.log(this.name+""+this.lastname)

   //return this.name+""+this.lastname;

}

const user=[

{name:'ankit',age:30},

{name:'rajesh',age:20},

{name:'subham',age:40},

{name:'rakesh',age:32},

{name:'priyanshu',age:18},

{name:'pankaj',age:22}

]

result=user.filter((element)=>element.name.charAt(0)=='p');

console.log(result);

//result=user.reduce((sum,element)=>sum+element.age,0);

//console.log(result);

// result=user.filter((element)=>element.age>30);

// console.log(result);

//result=user.map((element)=>element.name+"hello");

//console.log(result);

// for(b of result){

//     console.log(b);

// }

//console.log(user.name);

/*for (key in user){

  console.log(user[key].name+""+user[key].age);  

}*/

A=[1,2,3,4,6,8];

// for(b of A){

//     console.log(b);

// }

 result=A.find((element)=>element%2==0);

 console.log(result);

// result=A.reduce((sum,element)=>sum+element,0);

// console.log(result);

// result=A.map((element)=>element+"gudmorning");

// console.log(result);