但是可以通过乘并除以 10 解决此问题
- <!DOCTYPE html>
- <html>
- <body>
- <h1>JavaScript 数字</h1>
- <p>浮点的算数并不总是 100% 精准:</p>
- <p id="demo1"></p>
- <p>但是乘法和除法是有用的:</p>
- <p id="demo2"></p>
- <script>
- var x = 0.2 + 0.1;
- document.getElementById("demo1").innerHTML = "0.2 + 0.1 = " + x;
- var y = (0.2*10 + 0.1*10) / 10;
- document.getElementById("demo2").innerHTML = "0.2 + 0.1 = " + y;
- </script>
- </body>
- </html>