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Сообщение от s4meone
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нужно в левом ряду выставить цвета радуги.
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Rainbow</title>
<style>
.content-cell{
width: 10em;
height: 5em;
border: 1px solid #000;
}
.content-cell div{
width: 10em;
height: 5em;
}
</style>
</head>
<body>
<table>
<tbody>
<tr>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="1" draggable="true" ondragstart="drag(event)"></div>
</td>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="2" draggable="true" ondragstart="drag(event)"></div>
</td>
</tr>
<tr>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="3" draggable="true" ondragstart="drag(event)"></div>
</td>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="4" draggable="true" ondragstart="drag(event)"></div>
</td>
</tr>
<tr>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="5" draggable="true" ondragstart="drag(event)"></div>
</td>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="6" draggable="true" ondragstart="drag(event)"></div>
</td>
</tr>
<tr>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="7" draggable="true" ondragstart="drag(event)"></div>
</td>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="8" draggable="true" ondragstart="drag(event)"></div>
</td>
</tr>
<tr>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="9" draggable="true" ondragstart="drag(event)"></div>
</td>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="10" draggable="true" ondragstart="drag(event)"></div>
</td>
</tr>
<tr>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="11" draggable="true" ondragstart="drag(event)"></div>
</td>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="12" draggable="true" ondragstart="drag(event)"></div>
</td>
</tr>
<tr>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="13" draggable="true" ondragstart="drag(event)"></div>
</td>
<td class="content-cell" ondrop="drop(event)" ondragover="allowDrop(event)">
<div id="14" draggable="true" ondragstart="drag(event)"></div>
</td>
</tr>
</tbody>
</table>
<button onclick="check()" type="button">чек чек чек</button>
<button onclick="init()" type="button">new</button>
<script>
function allowDrop(ev) {
ev.preventDefault();
}
function drag(ev) {
ev.dataTransfer.setData("text", ev.target.id);
}
function drop(ev) {
ev.preventDefault();
var id = ev.dataTransfer.getData("text");
var div = document.getElementById(id);
var color = div.dataset.color || "";
var targetColor = ev.target.dataset.color || "";
div.style.backgroundColor = targetColor;
div.dataset.color = targetColor;
ev.target.style.backgroundColor = color;
ev.target.dataset.color = color;
}
var colors = ["red", "orange", "yellow", "green", "aqua", "blue", "purple"];
var divids = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14];
function init() {
divids.forEach(function(id) {
var div = document.getElementById(id);
div.style.backgroundColor = "";
div.dataset.color = "";
});
shuffle(divids);
colors.forEach(function(color, i) {
var id = divids[i];
var div = document.getElementById(id);
div.style.backgroundColor = color;
div.dataset.color = color;
});
}
function shuffle(array) {
array.sort(function() {
return Math.random() - 0.5;
});
}
function check() {
var ok = colors.every(function(color, i) {
return document.getElementById(i * 2 + 1).dataset.color == color;
}) ? "Верно!" : "Неверно!";
alert(ok);
}
init();
</script>
</body>
</html>