利用html和javascript技术写的简单用户注册界面(网页)表单验证

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1、效果图代码functionGetTextAreaValue(){vart=document.all.textarea.value;return(t);}functionygetxuanxian()//获取被选择的年份然后赋给gh变量在返回gh{varmyselect=documen

2、t.getElementById("LoftyYear");varindex=myselect.selectedIndex;myselect.options[index].value;vargh=myselect.options[index].text;return(gh);}functionmgetxuanxian()//获取被选择的月份然后赋给gh变量在返回gh{varmyselect=document.getElementById("LoftyMonth");varindex=myselect.selectedIndex;myselect.options[i

3、ndex].value;vargh=myselect.options[index].text;return(gh);}functiondgetxuanxian(){//获取被选择的日期然后赋给gh变量在返回ghvarmyselect=document.getElementById("LoftyDay");varindex=myselect.selectedIndex;myselect.options[index].value;vargh=myselect.options[index].text;return(gh);}functionsetDay(obj){//这

4、整一块是动态的给“日”期下拉框添加选项obj=obj.form;varyears=parseInt(obj.years.options[obj.years.selectedIndex].value);varmonths=parseInt(obj.months.options[obj.months.selectedIndex].value);if(obj.years.selectedIndex==0

5、

6、obj.months.selectedIndex==0)return;varlastday=monthday(years,months);varitemnum=obj

7、.days.length;if(lastday-1

8、,31);if(((years%4==0)&&(years%100!=0))

9、

10、(years%400==0)){lastday[1]=29;}returnlastday[months-1];}functionforto(ff,to){document.write('');for(varii=ff;ii<=to;ii++)document.write(''+ii+'');}functiona(){alert(document.all("years").va

11、lue+"年"+document.all("months").value+"月"+document.all("days").value+"日");}functionshowlist()//用信息框输出用户信息{varavarbvarcvarabvarsel=0;for(vari=0;i

12、Name(