for (var i in list code example
Example 1: for elem in list javascript
var myList = ["first element", "second element", "third element"];
for (let elem in myList) {
console.log(elem);
}
Example 2: javascript object array iteration
let obj = {
key1: "value1",
key2: "value2",
key3: "value3"
}
Object.keys(obj).forEach(key => {
let value = obj[key];
//use key and value here
});