I am working on a website that can generate templates with drag and drop. I have made an element generator. But the problem is that I can only drag and drop the elements that are already in the "container" as an example " already button" but the generated items are not droppable. I'm new to JavaScript so don't know much about it. Please solve this problem. So I may continue to work on my website Here is my code
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<style>
body {
margin: 0;
}
.container {
background-color: #333;
padding: 1rem;
margin-top: 1rem;
}
.draggable {
padding: 1rem;
background-color: white;
border: 1px solid black;
cursor: move;
}
.draggable.dragging {
opacity: .5;
}
/* Background Styles Only */
@import url('https://fonts.googleapis.com/css?family=Raleway');
* {
font-family: Raleway;
}
.side-links {
position: absolute;
top: 15px;
right: 15px;
}
.side-link {
display: flex;
align-items: center;
justify-content: center;
text-decoration: none;
margin-bottom: 10px;
color: white;
width: 180px;
padding: 10px 0;
border-radius: 10px;
}
.side-link-youtube {
background-color: red;
}
.side-link-twitter {
background-color: #1DA1F2;
}
.side-link-github {
background-color: #6e5494;
}
.side-link-text {
margin-left: 10px;
font-size: 18px;
}
.side-link-icon {
color: white;
font-size: 30px;
}
</style>
<body>
<textarea id="ambtnhtml" name="generatedCode1" > <button type="button" id="" draggable ="true"> Button</button></textarea>
<!-- area -->
<button type="button" id="generatehtml">generate button </button>
<div style="margin: auto;">
<button type="button" id="" draggable="true">Already Button</button>
</div>
<div >
</div>
</body>
<!-- drag and drop able script -->
<script>
const draggables = document.querySelectorAll('.draggable')
const containers = document.querySelectorAll('.container')
draggables.forEach(draggable => {
draggable.addEventListener('dragstart', () => {
draggable.classList.add('dragging')
})
draggable.addEventListener('dragend', () => {
draggable.classList.remove('dragging')
})
})
containers.forEach(container => {
container.addEventListener('dragover', e => {
e.preventDefault()
const afterElement = getDragAfterElement(container, e.clientY)
const draggable = document.querySelector('.dragging')
if (afterElement == null) {
container.appendChild(draggable)
} else {
container.insertBefore(draggable, afterElement)
}
})
})
function getDragAfterElement(container, y) {
const draggableElements = [...container.querySelectorAll('.draggable:not(.dragging)')]
return draggableElements.reduce((closest, child) => {
const box = child.getBoundingClientRect()
const offset = y - box.top - box.height / 2
if (offset < 0 && offset > closest.offset) {
return {
offset: offset,
element: child
}
} else {
return closest
}
}, {
offset: Number.NEGATIVE_INFINITY
}).element
}
</script>
<!-- add new button -->
<script src="http://code.jquery.com/jquery-1.8.1.min.js"></script>
<script>
$(document).ready(function() {
$("#generatehtml").click(function() {
$(".pipp").append($("#ambtnhtml").val());
$("ambtnhtml").val("");
});
});
</script>
</html>Please Help
CodePudding user response：
You missed adding event handlers to the new elements. I modified your example by adding event handlers to a separate function initDraggable so that later it would be easier to use it when generating new elements.
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<style>
body {
margin: 0;
}
.container {
background-color: #333;
padding: 1rem;
margin-top: 1rem;
}
.draggable {
padding: 1rem;
background-color: white;
border: 1px solid black;
cursor: move;
}
.draggable.dragging {
opacity: .5;
}
/* Background Styles Only */
@import url('https://fonts.googleapis.com/css?family=Raleway');
* {
font-family: Raleway;
}
.side-links {
position: absolute;
top: 15px;
right: 15px;
}
.side-link {
display: flex;
align-items: center;
justify-content: center;
text-decoration: none;
margin-bottom: 10px;
color: white;
width: 180px;
padding: 10px 0;
border-radius: 10px;
}
.side-link-youtube {
background-color: red;
}
.side-link-twitter {
background-color: #1DA1F2;
}
.side-link-github {
background-color: #6e5494;
}
.side-link-text {
margin-left: 10px;
font-size: 18px;
}
.side-link-icon {
color: white;
font-size: 30px;
}
</style>
<body>
<textarea id="ambtnhtml" name="generatedCode1" > <button type="button" id="" draggable ="true"> Button</button></textarea>
<!-- area -->
<button type="button" id="generatehtml">generate button </button>
<div style="margin: auto;">
<button type="button" id="" draggable="true">Already Button</button>
</div>
<div >
</div>
</body>
<!-- drag and drop able script -->
<script>
const draggables = document.querySelectorAll('.draggable')
const containers = document.querySelectorAll('.container')
function initDraggable (draggable) {
draggable.addEventListener('dragstart', () => {
draggable.classList.add('dragging')
})
draggable.addEventListener('dragend', () => {
draggable.classList.remove('dragging')
})
}
draggables.forEach(initDraggable)
containers.forEach(container => {
container.addEventListener('dragover', e => {
e.preventDefault()
const afterElement = getDragAfterElement(container, e.clientY)
const draggable = document.querySelector('.dragging')
if (afterElement == null) {
container.appendChild(draggable)
} else {
container.insertBefore(draggable, afterElement)
}
})
})
function getDragAfterElement(container, y) {
const draggableElements = [...container.querySelectorAll('.draggable:not(.dragging)')]
return draggableElements.reduce((closest, child) => {
const box = child.getBoundingClientRect()
const offset = y - box.top - box.height / 2
if (offset < 0 && offset > closest.offset) {
return {
offset: offset,
element: child
}
} else {
return closest
}
}, {
offset: Number.NEGATIVE_INFINITY
}).element
}
</script>
<!-- add new button -->
<script src="http://code.jquery.com/jquery-1.8.1.min.js"></script>
<script>
$(document).ready(function() {
$("#generatehtml").click(function() {
const newDraggable = $($("#ambtnhtml").val())
initDraggable(newDraggable.get(0))
$(".pipp").append(newDraggable);
$("ambtnhtml").val("");
});
});
</script>
</html>