W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
运行代码
<!DOCTYPE html> <html> <body> <p>1.797693134862315E+308 是浮点数的极限。</p> <p>请点击按钮来亲自查看。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("demo").innerHTML = 1.7976931348623157E+10308 + "<br>" + -1.7976931348623157E+10308; } </script> </body> </html>