所有
我有以下代码。如何修复它,以便只检查每个类别下的所有项目时才检查每个类别的类别复选框?
由于
<html>
<head>
<script src="http://www.google.com/jsapi"></script>
<script>
google.load("jquery", "1.3.2");
google.load("jqueryui", "1.7.2");
</script>
<script language="JavaScript">
function toggleTableRows()
{
$(document).ready(function() {
$('img.parent')
.css("cursor","pointer")
.toggle(
function() {
$(this).attr("title","Click to Collapse")
$(this).attr("src","arrow_expanded.gif");
$('tr').siblings('#child-'+this.id).toggle();
},
function() {
$(this).attr("title","Click to Expand");
$(this).attr("src","arrow_collapsed.gif");
$('tr').siblings('#child-'+this.id).toggle();
}
);
initCheckBoxes();
});
}
function toggleCheckboxes(current, form, field) {
$(document).ready(function() {
$("#"+ form +" :checkbox[name^='"+ field +"[']").attr("checked", current.checked);
});
}
function toggleParentCheckboxes(current, form) {
var checked = ($("#"+ form +" :checkbox[name='"+ current.name +"']").length == $("#"+ form +" :checkbox[name='"+ current.name +"']:checked").length);
// replace '[anything]' with '' instead of just '[]'
$("#"+ form +" :checkbox[name='"+ current.name.replace(/\[[^\]]*\]/, "") +"']").attr("checked", checked);
}
function initCheckBoxes(form) {
$("#"+ form +" :checkbox:checked").each(function() {
if (this.name.match(/chk[0-9]\[.*\]/)) {
toggleParentCheckboxes(this, form);
}
});
}
</script>
<script language="JavaScript">toggleTableRows();</script>
</head>
<body>
<form name="frmDinnerMenu" id="frmDinnerMenu" method="POST" action="">
<table border=1>
<tr>
<td><img class="parent" id="0" src="arrow_collapsed.gif" title="Click to Expand">Category - Fruits</td>
<td><input type="checkbox" name="chk0" onclick="toggleCheckboxes(this, 'frmDinnerMenu', 'chk0');"/></td>
</tr>
<tr style="display: none;" id="child-0">
<td> Apple</td>
<td><input type="checkbox" value="0" name="chk0[1]" onclick="toggleParentCheckboxes(this, 'frmDinnerMenu');"/></td>
</tr>
<tr style="display: none;" id="child-0">
<td> Banana</td>
<td><input type="checkbox" checked value="0" name="chk0[2]" onclick="toggleParentCheckboxes(this, 'frmDinnerMenu');"/></td>
</tr>
<tr style="display: none;" id="child-0">
<td> Orange</td>
<td><input type="checkbox" checked value="0" name="chk0[5]" onclick="toggleParentCheckboxes(this, 'frmDinnerMenu');"/></td>
</tr>
<tr><td><img class="parent" id="1" src="arrow_collapsed.gif" title="Click to Expand">Category - Vegetables</td><td><input type="checkbox" name="chk1" onclick="toggleCheckboxes(this, 'frmDinnerMenu', 'chk1');"/></td></tr>
<tr style="display: none;" id=child-1><td> Cabbage</td><td><input type="checkbox" checked value="0" name="chk1[21]" onclick="toggleParentCheckboxes(this, 'frmDinnerMenu');"/></td></tr>
<tr style="display: none;" id=child-1><td> Tomatoes</td><td><input type="checkbox" value="0" name="chk1[26]" onclick="toggleParentCheckboxes(this, 'frmDinnerMenu');"/></td></tr>
<tr style="display: none;" id=child-1><td> Green Peppers</td><td><input type="checkbox" checked value="0" name="chk1[29]" onclick="toggleParentCheckboxes(this, 'frmDinnerMenu');"/></td></tr>
</table>
</form>
</body>
</html>
答案 0 :(得分:1)
所以我会尝试回答这个问题(嘿,这是一个挑战!)。
首先让我指出为什么人们不喜欢你的问题:
尽管如此,请考虑使用更有针对性的选择器。在此示例中,请注意 name ^ =
function toggleParentCheckboxes(current, form) {
var name = current.name.replace(/\[[^\]]*\]/, "");
var selector = ":checkbox[name^='" + name + "[']";
var checked = ($(selector).length == $(selector + ":checked").length);
$("#"+ form +" :checkbox[name='" + name + "']").attr("checked", checked);
}
答案 1 :(得分:1)
尝试了一些你真正应该应用的笔记
我修复了一些能够处理这件事的事情
initcheckboxes在没有参数的情况下被调用,因此不能用作选择器(向toggleTableRows添加了param)
使一些jQuery foo更加灵活和健壮
修正了HTML + javascript
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>test</title>
<meta http-equiv="Content-Type" content="text/html;charset=ascii">
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("jquery", "1.3.2");
google.load("jqueryui", "1.7.2");
</script>
<script type="text/javascript" language="JavaScript">
function toggleTableRows(form) {
$(document).ready(function() {
$('img.parent')
.css("cursor","pointer")
.toggle(function() {
var x = $(this);
x.attr("title","Click to Collapse")
.attr("src","arrow_expanded.gif");
x.parents("tr").eq(0).siblings("[id^=child-"+x.attr("id")+"]").toggle();
}, function() {
var x = $(this);
x.attr("title","Click to Expand")
.attr("src","arrow_collapsed.gif");
x.parents("tr").eq(0).siblings("[id^=child-"+x.attr("id")+"]").toggle();
});
initCheckBoxes(form);
});
}
function toggleCheckboxes(current, form, field) {
$(document).ready(function() {
$("#"+ form +" input:checkbox[name^='"+ field +"[']").attr("checked", current.checked);
});
}
function toggleParentCheckboxes(current, form) {
var name = current.name.replace(/\[[^\]]*\]/, "");
var selected = $("input:checkbox[name^='" + name + "[']");
var checked = (selected.size() == selected.filter(":checked").size());
$("#"+ form +" :checkbox[name='" + name + "']").attr("checked", checked);
}
function initCheckBoxes(form) {
$("#"+ form +" input:checkbox:checked").each(function() {
if (this.name.match(/chk[0-9]\[.*\]/)) {
toggleParentCheckboxes(this, form);
}
});
}
</script>
<script type="text/javascript" language="JavaScript">toggleTableRows("frmDinnerMenu");</script>
<script type="text/javascript">
$(document).ready(function() {
$("tr:not([id]) input").click(function() {
var ele = $(this);
toggleCheckboxes(this, ele.parents("form").eq(0).attr("name"), ele.attr("name"));
ele=null;
});
$("tr[id] input").click(function() {
toggleParentCheckboxes(this, $(this).parents("form").eq(0).attr("name"))
});
});
</script>
<style type="text/css">tr.c1 {display: none;}</style>
</head>
<body>
<form name="frmDinnerMenu" id="frmDinnerMenu" method="post" action="">
<table border="1">
<tr>
<td><img class="parent" id="i0" src="arrow_collapsed.gif" alt="fruits" title="Click to Expand" name="0">Category - Fruits</td>
<td><input type="checkbox" name="chk0"></td>
</tr>
<tr class="c1" id="child-i00">
<td>Apple</td>
<td><input type="checkbox" value="0" name="chk0[1]"></td>
</tr>
<tr class="c1" id="child-i01">
<td>Banana</td>
<td><input type="checkbox" checked value="0" name="chk0[2]"></td>
</tr>
<tr class="c1" id="child-i02">
<td>Orange</td>
<td><input type="checkbox" checked value="0" name="chk0[5]"></td>
</tr>
<tr>
<td><img class="parent" id="i1" src="arrow_collapsed.gif" alt="vegetable" title="Click to Expand" name="1">Category - Vegetables</td>
<td><input type="checkbox" name="chk1"></td>
</tr>
<tr class="c1" id="child-i10">
<td>Cabbage</td>
<td><input type="checkbox" checked value="0" name="chk1[21]"></td>
</tr>
<tr class="c1" id="child-i11">
<td>Tomatoes</td>
<td><input type="checkbox" value="0" name="chk1[26]"></td>
</tr>
<tr class="c1" id="child-i12">
<td>Green Peppers</td>
<td><input type="checkbox" checked value="0" name="chk1[29]"></td>
</tr>
</table>
</form>
</body>
</html>