Asp.net中, Javascript 操作textBox的属性应用()

If a control is disabled it cannot be edited and its content is excluded when the form is submitted.If a control is readonly it cannot be edited, but its content (if any) is still included with the submission. 

即: 当ReadOnly=True时,控件ID在前后天仍可以被查询到。而当Diabled=True, 或者当Visible=True时,一旦Form被前台递交,其ID将不再被前台识别;此时,TextBox空间和Label空间功能将相差无几。

实际代码中,由于Label控件的局限性,很多时候借用TextBox控件,但显示时何Label一样。如下代码

 <asp:Textbox ID="lblComment"  runat="server" Width="200" ReadOnly="true"  Visible="True" BorderWidth="0px" BorderStyle="None" >

                    </asp:Textbox>

简单分析如下: 将 BorderWidth 设置为0,BorderStyle设置为None,其显示将和Label一样。Readonly设置为True,内部文字将不会被编辑。 

 下文增加一个js的控件属性修改function

function ShowComment(selectedcontrol, control1, control2, judgePara, width1, width2, msg) {
    if (control1 != null && control2 != null) {
        if (selectedcontrol.value == judgePara) {
            control1.value = msg;
            control2.style.width = width1;
        }
        else {
            control1.value = "";
            control2.style.width = width2;
        }
    }
}

其调用方法

<aspx:Textbox ID="txtCodeKubun" runat="server" ImeMode="Disabled" Width="30px" TabIndex="1"
                    onFocus="OnGreen('txtCodeKubun')"
                    onkeyup="TxtChange(this,document.getElementById('cmbCodeKubun'))"
                    onblur="TxtChangeBlur(this,document.getElementById('cmbCodeKubun'))"
                    onchange="ShowComment(this,document.getElementById('lblComment'),
                                               document.getElementById('txtComment'),
                                               '013','185px','400px','*Comment: how are you!')"
                    MaxLength="3" LengthAsBytes="true">
                </aspx:Textbox>
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原文地址:https://www.cnblogs.com/tomclock/p/7630570.html