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[JavaScript] JavaScript里的四舍五入函数round用法演示 →→→→→进入此内容的聊天室

来自 , 2020-03-11, 写在 JavaScript, 查看 98 次.
URL http://www.code666.cn/view/85ea6fd7
  1. <!DOCTYPE html>
  2. <html>
  3. <body>
  4.  
  5. <p id="demo">Click the button to round the number 2.5 to its nearest integer.</p>
  6.  
  7. <button onclick="myFunction()">Try it</button>
  8.  
  9. <script>
  10. function myFunction()
  11. {
  12. document.getElementById("demo").innerHTML=Math.round(2.5);
  13. }
  14. </script>
  15.  
  16. </body>
  17. </html>
  18.  
  19. //javascript/7873

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