如何防止TextBox的Enter键 [英] How to Prevent Enter Key for TextBoxes
问题描述
我想当我按下输入焦点时不要丢失当前文本框
或页面加载事件不应该调用
< pre lang =Javascript>< asp:Content ID = Content2 ContentPlaceHolderID = MainContent Runat = 服务器跨度>>
< script src = Scripts / validation.js type = text / javascript>< / script>
< script language = javascript type = text / javascript>
功能 EmpHelp(){
popup = < span class =code-sdkkeyword> window .open(' EmpMstrHelp.aspx' , null ,' height = 320,width = 320, status = no,resizable = no,scrollbars = no,toolbar = no,location = center,menubar = no,top = 100,left = 300');
common = EmpHelp
return false ;
}
function EmpId(){
// alert('ss');
// return(event.keyCode!= 13);
var key = event.keyCode;
// alert(key);
if (key == 113 && key!= 13 ) {
document .getElementById(' < %= btnEmpHelp.ClientID%>')。click();
}
其他 {
// document.getElementById('<%= txtEmpId.ClientID%>')。focus(); //它也不起作用,我希望所有文本框不仅仅是特定的一个
// return;
/ / 我希望我的焦点不会丢失,如果按Enter键不应调用页面加载事件
// 返回false;
}
}
< ; /脚本>
< table>
< tr>
< td align = right style = 颜色:#000000; font-weight:bold>
< span style = 颜色:红色> * < / span > 员工ID
< span class =code-keyword>< / td >
< td align = left style = 颜色:#000000; font-weight:bold>
< asp:TextBox ID = txtEmpId runat = server Width = 50px MaxLength = 5 TabIndex = 1
AutoPostBack = < span class =code-string> True ontextchanged = txtEmpId_TextChanged> < / asp:TextBox >
< asp:图片ID = btnEmpHelp runat = server ImageUrl = 〜/ help.gif Width = 20px / >
搜索
< / td >
< / tr >
protected void Page_Load( object sender,EventArgs e)
{
if (!IsPostBack)
{
clear(); // < span class =code-comment>我的fuctn清除所有值
txtEmpId.Attributes.Add( onkeypress, javascript:return alphanumeric(event);< /跨度>); // 假设我已经预先形成了一些验证
txtEmpId.Attributes.Add ( onkeydown, EMPID()跨度>); // 一个弹出帮助aapers
btnEmpHelp.Attributes.Add(< span class =code-string> onclick, EmpHelp()跨度>); // 帮助按钮
}
}
protected void txtEmpId_TextChanged( object sender,EventArgs e)
{
// 让我说我的填充代码
}
使用jquery,我们已经为你做了一些simmiler。我们有位置
( window )。keydown( function (event){
if (event.keyCode == 13 ){
event.preventDefault();
return false ;
}
});
doucment.ready中的一堆代码行。
它基本上压制了输入。
参考:
禁用TextBox中的Enter键以避免ASP.Net中的回发 [ ^ ]
I want to when i press enter focus should not lost from current text box
or page load event should not call
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" Runat="Server">
<script src="Scripts/validation.js" type="text/javascript"></script>
<script language="javascript" type="text/javascript">
function EmpHelp() {
popup = window.open('EmpMstrHelp.aspx', null, 'height=320, width=320,status= no, resizable= no, scrollbars=no, toolbar=no,location=center,menubar=no, top=100, left=300');
common = "EmpHelp"
return false;
}
function EmpId() {
// alert('ss');
// return (event.keyCode!=13);
var key = event.keyCode;
// alert(key);
if (key == 113 && key != 13) {
document.getElementById('<%=btnEmpHelp.ClientID %>').click();
}
else {
//document.getElementById('<%=txtEmpId.ClientID %>').focus();//its also not working and i want for all text box not for only specific one
//return;
//I Want my focus should not lost and page load event should not call if Enter pressed
// return false;
}
}
</script>
<table>
<tr>
<td align="right" style="color: #000000; font-weight: bold">
<span style="color:Red">*</span>Employee Id
</td>
<td align="left" style="color: #000000; font-weight: bold">
<asp:TextBox ID="txtEmpId" runat="server" Width="50px" MaxLength="5" TabIndex="1"
AutoPostBack="True" ontextchanged="txtEmpId_TextChanged"></asp:TextBox>
<asp:Image ID="btnEmpHelp" runat="server" ImageUrl="~/help.gif" Width="20px" />
Search
</td>
</tr>
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
clear();//my fuctn that clear all values
txtEmpId.Attributes.Add("onkeypress", "javascript:return alphanumeric(event);"); //lets say i have preform some validations
txtEmpId.Attributes.Add("onkeydown", "EmpId()"); //one pop up help aapers
btnEmpHelp.Attributes.Add("onclick", "EmpHelp()"); //that help button
}
}
protected void txtEmpId_TextChanged(object sender, EventArgs e)
{
//lets say my Populated code
}
Using jquery ,we have done something simmiler to yours. we have place
(window).keydown(function(event){ if(event.keyCode == 13) { event.preventDefault(); return false; } });
bunch lines of code in doucment.ready.
it basically suppress enter.
Refer:
Disable Enter key in TextBox to avoid postback in ASP.Net[^]
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