标签：cti charset func orm href nbsp onclick meta com
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 </head> 7 <body> 8 <script type="text/javascript"> 9 function check() { 10 if(document.getElementById("username").value=="") { 11 alert("没有输入用户名！"); 12 return false; 13 } else if(document.getElementById("password").value=="") { 14 alert("没有输入密码！"); 15 return false; 16 } else { 17 alert("提交成功！") 18 return true; 19 } 20 } 21 </script> 22 <form name="form1"> 23 <input type="text" id="username"> 24 <input type="password" id="password" > 25 <input type="submit" onclick="check()"> 26 </form> 27 </body> 28 </html>
更多参考：牛客网 https://www.nowcoder.com/questionTerminal/f904c482f21346a6a19efd5a82655518
标签：cti charset func orm href nbsp onclick meta com
原文地址：http://www.cnblogs.com/guorange/p/7212665.html
