Create Multiple Boxes from One Box

Question

I am trying to create multiple boxes from one box. But I am new to HTML, not know how to do it. What I need: I need one box; by clicking on it, two new boxes will create, and next time four boxes will create.

let elements = document.getElementsByClassName('box');
for(var i = 0; i < elements.length; i++)
{
  console.log(elements[i]);
}

.box { 
  width: 100px; 
  height: 100px; 
  border: 1px solid green; 
  background: steelblue; 
}

Cédric · Answer

Here is my attempt (vanilla JS) :

let boxesToCreate = 2;
createBoxesOnClick = (box) => {
  box.addEventListener("click", () => {
    for(let i = 0; i < boxesToCreate; i ++){
      let newBox = document.createElement("div");
      newBox.classList.add("box");
      newBox.textContent=boxesToCreate + i;
      createBoxesOnClick(newBox);
      document.body.appendChild(newBox);
    }
    boxesToCreate = boxesToCreate * 2;
  })    
}

let firstBox = document.querySelector(".box");
createBoxesOnClick(firstBox);

body{
  display:flex;
  flex-wrap:wrap;
}
.box { 
  width: 100px; 
  height: 100px; 
  border: 1px solid green; 
  background: steelblue; 
}

I'm not sure of the best way to register a new element to an event so I made a function to register new boxes to onClick :

I create x (boxToCreate) boxes
Add the box class
Add text to check the box number
Register the box to onClick() with the function
Append the new box to the container (body)
Multiply boxToCreate by 2. Note that with your question we can't tell if you want to increase the number of created each time by x2 or +2, you just need to change boxesToCreate = boxesToCreate * 2 by boxesToCreate = boxesToCreate + 2.

userBpSz · Answer

You can try below code once I used jQuery for it.

Here is code snippet:

$(document).on('click', '.box', function(){
    $(".box").clone().eq(0).insertAfter( ".box" );
    var i = 1;
    $('.box').each(function() {
        $(this).html(i);
        i++;
    });
});

.box { 
    width: 100px; 
    height: 100px; 
    border: 1px solid green; 
    background: steelblue; 
    display: inline-block;
    margin: 4px;
    font-size: 15pt;
    text-align: center;
    vertical-align: middle;
}

bobi · Answer

This will increase boxes + 2 from previews generated

if you like you can change box_num += 2 to box_num *= 2 that will increase boxes * 2 from previerws generated

let box_num = 2
let num = 1

$(document).on('click', '.box', function(){

let html = '';

  for(let i = 0; i < box_num; i++){
    html += `${num + 1}` 
    num++
  }
  
  $('.container').append(html)
  box_num += 2
  
})

.box { 
            width: 100px; 
            height: 100px; 
            border: 1px solid green; 
            background: steelblue; 
            display: inline-block
        }

Create Multiple Boxes from One Box

3 Answers