asp:button的OnClientClick事件 [英] OnClientClick event of asp:button

问题描述

大家好，

我的代码有问题.我无法调用此onclient事件:

Hi everyone,

There is something wrong with my code. I am not able to call this onclient event:

function filterSearch()
{
  var combo = $find('<%=RadComboBox1.ClientID %>');
  var comboValue = document.getElementById(combo.UniqueID + "_value").value;
  if (comboValue == null) 
  {
    alert("You must select a category before processing search!");
    return false;
  }
}

<asp:Button ID="btnSearch" runat="server" Style="float: left; color: black; font-weight: bold" Text="Search" OnClick="btnSearch_Click" OnClientClick="javascript: return filterSearch();" />

如果组合框中未选择任何值，则我希望它在按钮的OnClientClick事件处理程序中运行.可能是什么问题?

谢谢，
Amit

I want this to run in the OnClientClick event handler of the button, if no value is selected in combobox. What could be the problem?

Thanks,
Amit

推荐答案

find(' <％= RadComboBox1 .ClientID％>'); var comboValue = document.getElementById(combo.UniqueID + " ).如果(comboValue == 空) { alert(" )； 返回 假； } }

find('<%=RadComboBox1.ClientID %>'); var comboValue = document.getElementById(combo.UniqueID + "_value").value; if (comboValue == null) { alert("You must select a category before processing search!"); return false; } }

<asp:Button ID="btnSearch" runat="server" Style="float: left; color: black; font-weight: bold" Text="Search" OnClick="btnSearch_Click" OnClientClick="javascript: return filterSearch();" />

如果组合框中未选择任何值，则我希望它在按钮的OnClientClick事件处理程序中运行.可能是什么问题?

谢谢，
Amit

I want this to run in the OnClientClick event handler of the button, if no value is selected in combobox. What could be the problem?

Thanks,
Amit

您的JavaScript函数未返回真实值.因此，onClick事件将永远不会激活.在OnClientClick中返回true后，会发生onClick事件.
喜欢

Your javascript function does not return true value. So, onClick event will never active. after returning true in OnClientClick, onClick event occur.
Like

function filterSearch()
{
  var combo =

find(''<%=RadComboBox1.ClientID %>''); var comboValue = document.getElementById(combo.UniqueID + "_value").value; if (comboValue == null) { alert("You must select a category before processing search!"); return false; } return true; }

find(''<%=RadComboBox1.ClientID %>''); var comboValue = document.getElementById(combo.UniqueID + "_value").value; if (comboValue == null) { alert("You must select a category before processing search!"); return false; } return true; }

<asp:button id="btnSearch" runat="server" style="float: left; color: black; font-weight: bold" text="Search" onclick="btnSearch_Click" onclientclick="return filterSearch()==true?true:false;" xmlns:asp="#unknown" />

这篇关于asp:button的OnClientClick事件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IT屋！