for in with index javascript code example
Example 1: javascript object array iteration
let obj = {
key1: "value1",
key2: "value2",
key3: "value3"
}
Object.keys(obj).forEach(key => {
let value = obj[key];
});
Example 2: js get index from foreach
var myArray = [123, 15, 187, 32];
myArray.forEach(function (value, i) {
console.log('%d: %s', i, value);
});
Example 3: javascript for of index
let array = ["foo", "bar"]
let low = 0;
let high = array.length;
for(let i = low; i < high; i++) {
console.log(i);
console.log(array[i]);
}
Example 4: javascript for loop return index
const targetindex = myarray.findIndex(item => item.name === 'xyz');