Frequently Used JS Codes

Get all the child elements

var all_checkbox = document.getElementById("gg_data_tags").querySelectorAll('input[type="checkbox"]')

Loop for the child elements

all_checkbox.forEach(function (item) {
  item.checked = false
})

Add Class to an element

this.result_player_two.classList.add("current-player")

Add Multiple Classes to an element

this.result_player_two.classList.add("current-player", "class_2", "class_3")```

## Remove Class from an element

```javascript
this.result_player_one.classList.remove("current-player")

Add 'id' attribute to an element

this.result_player_one.setAttribute("id", "my-id")

Add custom attribute to an element

this.result_player_one.setAttribute("data-score", "10")

Remove 'class' attribute from an element

this.result_player_one.removeAttribute("class")

Remove Multiple Classes to an element

this.result_player_two.classList.remove("class_2", "class_3")

Force checkbox to check

document.getElementById("checkbox").checked = true;```

## Force checkbox to uncheck

```javascript
document.getElementById("checkbox").checked = false;

Push data to array

var sel_authors = new Array()
sel_authors.push("john", "mahbub", "alam", "khan")

Random value betwen two numbers

 randomIntFromInterval(min, max) { // min and max included
    return Math.floor(Math.random() * (max - min + 1) + min)
  }

Join Array

const fruits = ["Banana", "Orange", "Apple", "Mango"]
let text = fruits.join()

Array Map

const numbers = [65, 44, 12, 4]
const newArr = numbers.map(myFunction)

function myFunction(num) {
  return num * 10
}

More example

You can check more javascript example codes from here.

Acknowledgement

• bluewindlab.net