1.getAttribute获取属性
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>element对象</title> </head> <body> <!-- getAttribute属性名 --> <input type="text" id="inputid" value="加油啊,进度有点慢呢"> <script type="text/javascript"> var input1 = document.getElementById("inputid"); //getAttribute得到属性里面的值 alert(input1.getAttribute("value")); alert(input1.getAttribute("id")); </script> </body> </html>
2.setAttribute设置属性
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>element对象</title> </head> <body> <!-- getAttribute属性名 --> <input type="text" id="inputid" value="加油啊,进度有点慢呢"> <script type="text/javascript"> var input1 = document.getElementById("inputid"); //设置属性值 alert(input1.getAttribute("class")); input1.setAttribute("class","果子一定要加油"); alert(input1.getAttribute("class")); </script> </body> </html>
3.removeAttribute删除属性
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>element对象</title> </head> <body> <!-- getAttribute属性名 --> <input type="text" name="果子请你拼命,不然你会一事无成" id="inputid" value="加油啊,进度有点慢呢"> <script type="text/javascript"> var input1 = document.getElementById("inputid"); //removeAttribute删除属性 alert(input1.getAttribute("name")); input1.removeAttribute("name"); alert(input1.getAttribute("name")); </script> </body> </html>
注意:removeAttribute不能删除value属性
原文：https://www.cnblogs.com/zjm1999/p/10428597.html