按del键时，文本框的onkeypress在IE中不起作用 [英] onkeypress of textbox not working in IE when del key is pressed

问题描述

大家好，

我在gridview控制问题中有一个asp.net文本框，即时通讯是当用户从键盘上按DEL键操作其在其他键上时，"onkeypress"事件在IE中不起作用，我的代码如下

Hi all,

i have a asp.net textbox in gridview control problem im having is that "onkeypress" event is not working in IE when user pres DEL key from keyboard its working on other keys my code is as follows

<asp:TextBox CssClass="InputBox"  onkeypress="return isValidKey(event)" ID="txtRefundAmount" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Amount") %>'></asp:TextBox>

function isValidKey(e) {
            return false;
        }

我只是想防止用户修改文本框值.这可以通过设置文本框属性readonly = true或enable = false来完成，但是在我的情况下，另一个Java脚本函数正在更新此文本框的值，并且如果我将其设置为只读或禁用运行时的更新值，则在保存数据时不会在服务器上发布

i just simply want to prevent user from modifying textbox value. this can be done by setting textbox property readonly=true or enable=false but in my case another java script function is updating value this textbox and if i make it readonly or disable updated value at run time is not posted on server when saving data

推荐答案

尝试此

try this

function isValidKey(e) { 
    
  var charCode = e.keyCode || e.which;     
  if (charCode == 8 || charCode == 46)         
      return false;      

return true; 
}  

<input id="tb_box" onkeydown="return isValidKey(event)" type="text" /> 

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