如何为复选框分配值? [英] How Do I assign a checkbox a value?
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问题描述
我有一个名为checkbox1的复选框....我想如果将值检查为=是，如果未检查为=否.........我将如何进行编码?
I have a single checkbox called checkbox1.... I want if checked the value to = yes and if not checked value = no....... how would i go about coding this?
推荐答案
ASP Checkbox没有"Value"，它具有Checked属性，例如
ASP Checkbox does not have a "Value" it has a Checked property e.g.
CheckBox1.Checked = True
function check()
{
if(document.getElementById("checkbox1").checked==true)
{
document.getElementById("checkbox1").checked=false;
}
else
{
document.getElementById("checkbox1").checked=true;
}
}
HTML
HTML
<span önclick="check()">Set checkbox </span>
尝试一下:
Try this:
<head runat="server">
<script>
function changeValue(checkbox) {
var labels = document.getElementsByTagName('label');
var label;
for (var i = 0; i < labels.length; i++) {
if (labels[i].htmlFor != '') {
if (document.getElementById(labels[i].htmlFor) == checkbox) {
label = labels[i]
break;
}
}
}
if (checkbox.checked) {
checkbox.value = "Yes";
label.innerHTML = "Yes";
}
else {
checkbox.value = "No";
label.innerHTML = "No";
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:CheckBox ID="CheckBox1" runat="server" Text="No" onclick="changeValue(this)" />
</div>
</form>
</body>
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