JQuery 設定checkbox select radio 為“唯讀”

最後更新：2014-07-02 來源：互聯網

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標籤：style blog http java 使用 strong

JQuery 設定checkbox select radio 為“唯讀”，通過測試知道使用HTML標籤的 text 和 textarea 、button 可以設定readonly="readonly"屬性。

但是checkbox 、select、 radio 這三個控制項使用起來不能使用readonly="readonly"屬性，只有 disabled="disabled"可以使用。

這樣就出現問題了。又想不讓修改，又想在後台擷取值。如果使用disabled屬性，但是發現(string value = Request.Form["XX"];)值為空白。

不想修改後台代碼，最後在和博哥的討論之下，終於想出了下面的方法。

[html] view plaincopyprint?

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<script type="text/javascript">
function setSCR_ReadOnly() {
var items = $("input[type=‘checkbox‘]")
var html = ""
for (var i = 0; i < items.length; i++) {
items[i].disabled = true;
html += "<input type=‘text‘ name=‘" + items[i].id + "‘ value=‘" + items[i].value + "‘>";
}
var items = $("select");
for (var i = 0; i < items.length; i++) {
html += "<input type=‘text‘ name=‘" + items[i].id + "‘ value=‘" + items[i].value + "‘>";
items[i].disabled = true;
}
var items = $(":radio");
for (var i = 0; i < items.length; i++) {
html += "<input type=‘text‘ name=‘" + items[i].id + "‘ value=‘" + items[i].value + "‘>";
items[i].disabled = true;
}
$("#divhtml").html(html);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="text" readonly="readonly" />
<input type="button" value="不可用" onclick="setSCR_ReadOnly()" />
<input type="checkbox" id="r" checked="checked" runat="server" value="cboVAlue" />
<select id="sel" name="sel">
<option value="請選擇">請選擇</option>
<option value="1">1</option>
</select>
<select id="Select1" name="Select1">
<option value="請選擇">請選擇</option>
<option value="1" selected="selected">1</option>
</select>
<input id="rdo" name="rdo" type="radio" value="1" checked="checked" />
<asp:Button runat="server" Text="Button" onclick="Unnamed1_Click" />
<div style="display: none" id="divhtml">
</div>
</div>
</form>
</body>
</html>

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server">    <title></title>    <script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>    <script type="text/javascript">        function setSCR_ReadOnly() {            var items = $("input[type=‘checkbox‘]")            var html = ""            for (var i = 0; i < items.length; i++) {                items[i].disabled = true;                html += "<input type=‘text‘ name=‘" + items[i].id + "‘ value=‘" + items[i].value + "‘>";            }            var items = $("select");            for (var i = 0; i < items.length; i++) {                html += "<input type=‘text‘ name=‘" + items[i].id + "‘ value=‘" + items[i].value + "‘>";                items[i].disabled = true;            }            var items = $(":radio");            for (var i = 0; i < items.length; i++) {                html += "<input type=‘text‘ name=‘" + items[i].id + "‘ value=‘" + items[i].value + "‘>";                items[i].disabled = true;            }            $("#divhtml").html(html);        }    </script></head><body>    <form id="form1" runat="server">    <div>        <input type="text" readonly="readonly" />        <input  type="button" value="不可用" onclick="setSCR_ReadOnly()" />        <input  type="checkbox" id="r" checked="checked" runat="server" value="cboVAlue" />        <select  id="sel" name="sel">            <option value="請選擇">請選擇</option>            <option value="1">1</option>        </select>        <select id="Select1" name="Select1">            <option value="請選擇">請選擇</option>            <option value="1" selected="selected">1</option>        </select>        <input  id="rdo" name="rdo" type="radio" value="1" checked="checked" />        <asp:Button runat="server" Text="Button" onclick="Unnamed1_Click" />        <div style="display: none" id="divhtml">        </div>    </div>    </form></body></html>

將這些控制項設定為disabled以後，發現這些控制項就可以擷取值。 [csharp] view plaincopyprint?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Unnamed1_Click(object sender, EventArgs e)
{
string value = Request.Form["r"];
string q = Request.Form["sel"];
string s = Request.Form["Select1"];
string w = Request.Form["rdo"];
}
}

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JQuery 設定checkbox select radio 為“唯讀”

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