HTML5 – 数字类型 它只接受数字值。step 属性指定精度,默认为 1。 示例 <!DOCTYPE HTML> <html> <body> <form action = "/cgi-bin/html5.cgi" method = "get"> 选择数字:<input type = "number" min = "0" max = "10" step "1" value = "5" name = "newinput" /> <input type = "submit" value = "提交" /> </form> </body> </html> HTMLCopy 输出