如何在文本框和按键上放置默认值将其删除 [英] how to put default value in textbox and on keypress remove it

问题描述

如何在文本框和按键上放置默认值将其删除
 
 
 value =0onfocus =if（this.value == ='0'）this.value =''onblur =if（this.value ===''）this.value ='0'; 
 
 <   asp：TextBox     ID   =  txt_compvalue    runat   =  server    value   =  0    onfocus   =  if（this.value ==='0'）this.value =''    onblur   =  if（this.value ===''）this.value ='0';   宽度  =  45％ >  <   / asp：TextBox  >  

解决方案

您好，



尝试这个：

 <   asp：TextBox     id   =  TextBox1   文字  = 默认值    runat   =  server   < span class =code-at致敬> onclick   =  this.value ='';    onblur   =  this.value ='默认值';  /  >  

资料来源： http://forums.asp.net/post/5098203.aspx [ ^ ]

检查



如何使用Keypress事件asp.net [ ^ ]

how to put default value in textbox and on keypress remove it


value="0" onfocus="if (this.value === '0') this.value = ''" onblur="if(this.value === '') this.value = '0';"

<asp:TextBox ID="txt_compvalue" runat="server" value="0" onfocus="if (this.value === '0') this.value = ''" onblur="if(this.value === '') this.value = '0';" Width="45%"></asp:TextBox>

解决方案

Hi,

Try this:

<asp:TextBox id="TextBox1" Text="Default value" runat="server" onclick="this.value='';" onblur="this.value='Default value';"/>

Source: http://forums.asp.net/post/5098203.aspx[^]

Check

how to use Keypress Event in asp.net[^]

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