loop on array value javascript code example
Example 1: javascript loop through array
Array.prototype.myEach = function(callback) {
for (let i = 0 ; i < this.length ; i ++) {
callback(this[i]);
}
}
let array = ['Item 1', 'Item 2', 'Item 3', 'Item 4'];
array.myEach(function (element) {
console.log(element);
});
Example 2: iterate through array javascript
for (var key in validation_messages) {
if (!validation_messages.hasOwnProperty(key)) continue;
var obj = validation_messages[key];
for (var prop in obj) {
if (!obj.hasOwnProperty(prop)) continue;
alert(prop + " = " + obj[prop]);
}
}