# For Of

* Used to iterate iterable objects
* Loop values instead of keys&#x20;
* You can use break, continue in for of loop
* won't loop over prototype like for in

## Loop array

```javascript
var arr = [1,2];

for(let val of arr){
    console.log(val);
}
// output
1
2
```

## Iterare over arguments ( without converting it to array )

```javascript
// else you might have done Array.from(arguments).forEach()
function getVal(){
    for(let val of argumants){
        console.log(val);
    }
}
```

## Loop over dom nodes without converting it to array

```
var ps = document.querySelectorAll('p');

for(let paragraph of ps){
    paragraph.addEventListener('click', function(){});
}
```

## Loop with index

```javascript
var arr = ["Hemant",2, "Vinay"];

for(let [i, val] of arr.entries()){
    console.log(i, val);
}

// output
0 Hemant 
1 2 
2 Vinay
```

## Obeject literal not iterable

```javascript
var arr = {name: 'hemant', age: 20, loc: 'Hyderabad'};

for(let val of arr){
    console.log(val);
}
// TypeError: arr is not iterable
```

## Iterate Set

```javascript
var s = new Set();
s.add("one");
s.add(2);
s.add("three");

for(let val of s){
    console.log(val);
}
// output
one
2
three
```

## Iterate Map

```javascript
var m = new Map();
m.set("one", 1);
m.set('two', 2);

for(let val of m){
    console.log(val);
}

// output
["one", 1]
["two", 2]
```
