本文介绍了DropDownList和TextBox验证的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我需要帮助告诉如何在btn_click上TextBox5文本长度大于0时如何使警报()不弹出
I need help figurig out how I can make alert() not to popup when TextBox5 text length is greater than 0 on btn_click
function Validate()
{
if (document.getElementById("<%=ddlFinalAction.ClientID%>").selectedIndex == "")
{
alert('Must Enter Final Action Taken');
return false;
}
if (document.getElementById("<%=ddlFinalAction.ClientID%>").selectedIndex == "1" || document.getElementByID"<%TextBox5.ClientID%>". value > 0)
{
alert('Must Enter Comment');
return false;
}
return true;
}//end validate()
推荐答案
function Validate()
{
var message = "";
var ddl = document.getElementById("<%= ddlFinalAction.ClientID %>");
var ddlValue = ddl.options[ddl.selectedIndex].value;
if (ddlValue == "")
{
message +="Must Enter Final Action Taken\n";
}
var txt = document.getElementById("<%= TextBox5.ClientID %>");
var txtValue = txt.value.trim();
if (txtValue.length == 0)
{
message +="Must Enter Comment";
}
if(message != "")
{
alert(message);
return false;
}
else
{
alert("ok");
return true;
}
}
这篇关于DropDownList和TextBox验证的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!