时间:2021-07-01 10:21:17 帮助过:111人阅读
本文实例为大家讲述了js实现根据身份证号自动生成出生日期的代码,分享给大家供大家参考,具体内容如下
运行效果图:
<!doctype> <html> <head> <script type="text/javascript"> function dealCard(){ var birthday=getBirthday(); switch(birthday){ case 0:alert("Sorry,the program runs wrong!");break; case 1:alert("You must be input again!");break; default: alert("the birthday is"+birthday);break; } } function getBirthday(){ var a=document.getElementById("card").value; if(15==a.length || 18==a.length){ var left=a.length-12; var right=a.length-4; var b=a.slice(left,right); if(8==b.length){ return b; } else return 0; } else return 1; } </script> </head> <body> input <input type="text" id="card" height=20px width=40px/> <br/> <button type="button" onclick="dealCard()">please click it</button> </body> </html>
代码直接复制即可运行哦!
希望本文所述对大家学习javascript程序设计有所帮助。