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- <html>
- <head>
- <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
- </head>
- <style>
- table,
- td {
- border: 2px solid black;
- }
- td {
- width: 17vw;
- height: 17vw;
- }
- .red{
- background-color: red;
- }
- </style>
- <body>
- <table>
- <tr>
- <td id="11"></td>
- <td id="12"></td>
- <td id="13"></td>
- <td id="14"></td>
- <td id="15"></td>
- </tr>
- <tr>
- <td id="21"></td>
- <td id="22"></td>
- <td id="23"></td>
- <td id="24"></td>
- <td id="25"></td>
- </tr>
- <tr>
- <td id="31"></td>
- <td id="32"></td>
- <td id="33"></td>
- <td id="34"></td>
- <td id="35"></td>
- </tr>
- <tr>
- <td id="41"></td>
- <td id="42"></td>
- <td id="43"></td>
- <td id="44"></td>
- <td id="45"></td>
- </tr>
- <tr>
- <td id="51"></td>
- <td id="52"></td>
- <td id="53"></td>
- <td id="54"></td>
- <td id="55"></td>
- </tr>
- </table>
- </body>
- <script>
- function getRandomNumber(){
- return Math.floor(Math.random() * 5) + 1 ;
- }
- function getRandomSquare(){
- let y = getRandomNumber().toString();
- let x = getRandomNumber().toString();
- return y+x;
- }
- function makeRedSquare(){
- $("td").removeClass("red");
- let id = getRandomSquare();
- console.log(id);
- $("#" + id).addClass("red");
- }
- setInterval(makeRedSquare, 3000);
- </script>
- </html>
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