控件是在 javascript中手写的
function addEduInfo()
{
var seed=Number(document.getElementById("txtSeed").value);
seed+=1;
document.getElementById("txtSeed").value=seed;
var addHtml="<table width=\"100%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\" id=\"t_edu_"+seed+"\"><tr><td width=\"100\" height=\"30\" align=\"right\">学校名称:</td><td><input name=\"txtSchoolName_"+seed+"\" type=\"text\" id=\"txtSchoolName_"+seed+"\" maxlength=\"50\" /></td><td width=\"100\" align=\"right\">学历:</td><td><select name=\"ddlEducation_"+seed+"\" id=\"ddlEducation_"+seed+"\"></select></td></tr><tr><td height=\"30\" align=\"right\">专业:</td><td><input name=\"txtSpecialty_"+seed+"\" type=\"text\" id=\"txtSpecialty_"+seed+"\" maxlength=\"50\" /></td><td align=\"right\">技能:</td><td><input name=\"txtSkill_"+seed+"\" type=\"text\" id=\"txtSkill_"+seed+"\" /></td></tr><tr><td height=\"30\" align=\"right\" style=\"border-bottom:1px solid #DDDDDD;\">入学时间:</td><td style=\"border-bottom:1px solid #DDDDDD;\"><input name=\"txtRX_"+seed+"\" type=\"text\" id=\"txtRX_"+seed+"\" readonly=\"readonly\" onclick=\"fPopCalendar(txtRX_"+seed+",txtRX_"+seed+");return false;\"/></td><td align=\"right\" style=\"border-bottom:1px solid #DDDDDD;\">毕业时间:</td><td style=\"border-bottom:1px solid #DDDDDD;\"><input name=\"txtBY_"+seed+"\" type=\"text\" id=\"txtBY_"+seed+"\" readonly=\"readonly\" onclick=\"fPopCalendar(txtBY_"+seed+",txtBY_"+seed+");return false;\"/><input type=\"hidden\" id=\"txtEID_" + seed + "\" name=\"txtEID_" + seed + "\" value=\"\" /></td></tr></table>";
var divObj=document.getElementById("div_tContent");
divObj.innerHTML = divObj.innerHTML + addHtml;
var ddlObj=document.getElementById("ctl00$mainContent$ddlEdu");
var newDDL=document.getElementById("ddlEducation_"+seed);
if (ddlObj == null)
{
return;
}
for(var i=0;i<ddlObj.length;i++)
{
var itemValue=ddlObj.options[i].value;
var itemText=ddlObj.options[i].text;
//alert("Value="+itemValue+";Text="+itemText);
var opt=new Option(itemText,itemValue);
newDDL.options.add(opt);
}
}
如何判断其中的文本框不为空呢?
function addEduInfo()
{
var seed=Number(document.getElementById("txtSeed").value);
seed+=1;
document.getElementById("txtSeed").value=seed;
var addHtml="<table width=\"100%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\" id=\"t_edu_"+seed+"\"><tr><td width=\"100\" height=\"30\" align=\"right\">学校名称:</td><td><input name=\"txtSchoolName_"+seed+"\" type=\"text\" id=\"txtSchoolName_"+seed+"\" maxlength=\"50\" /></td><td width=\"100\" align=\"right\">学历:</td><td><select name=\"ddlEducation_"+seed+"\" id=\"ddlEducation_"+seed+"\"></select></td></tr><tr><td height=\"30\" align=\"right\">专业:</td><td><input name=\"txtSpecialty_"+seed+"\" type=\"text\" id=\"txtSpecialty_"+seed+"\" maxlength=\"50\" /></td><td align=\"right\">技能:</td><td><input name=\"txtSkill_"+seed+"\" type=\"text\" id=\"txtSkill_"+seed+"\" /></td></tr><tr><td height=\"30\" align=\"right\" style=\"border-bottom:1px solid #DDDDDD;\">入学时间:</td><td style=\"border-bottom:1px solid #DDDDDD;\"><input name=\"txtRX_"+seed+"\" type=\"text\" id=\"txtRX_"+seed+"\" readonly=\"readonly\" onclick=\"fPopCalendar(txtRX_"+seed+",txtRX_"+seed+");return false;\"/></td><td align=\"right\" style=\"border-bottom:1px solid #DDDDDD;\">毕业时间:</td><td style=\"border-bottom:1px solid #DDDDDD;\"><input name=\"txtBY_"+seed+"\" type=\"text\" id=\"txtBY_"+seed+"\" readonly=\"readonly\" onclick=\"fPopCalendar(txtBY_"+seed+",txtBY_"+seed+");return false;\"/><input type=\"hidden\" id=\"txtEID_" + seed + "\" name=\"txtEID_" + seed + "\" value=\"\" /></td></tr></table>";
var divObj=document.getElementById("div_tContent");
divObj.innerHTML = divObj.innerHTML + addHtml;
var ddlObj=document.getElementById("ctl00$mainContent$ddlEdu");
var newDDL=document.getElementById("ddlEducation_"+seed);
if (ddlObj == null)
{
return;
}
for(var i=0;i<ddlObj.length;i++)
{
var itemValue=ddlObj.options[i].value;
var itemText=ddlObj.options[i].text;
//alert("Value="+itemValue+";Text="+itemText);
var opt=new Option(itemText,itemValue);
newDDL.options.add(opt);
}
}
如何判断其中的文本框不为空呢?
if(this.value!=null) doSth
//或者
document.getElementById("文本框ID").value!=null