名字要一样的话
只有考虑用容器都包含了
<form name=hrong>
<span id="s1">
<input type=checkbox name=All onclick="checkAll('s1')">全选<br/>
<input type=checkbox name=mm onclick="checkItem('s1')"><br/>
<input type=checkbox name=mm onclick="checkItem('s1')"><br/>
<input type=checkbox name=mm onclick="checkItem('s1')"><br/>
<input type=checkbox name=mm onclick="checkItem('s1')"><br/>
<input type=checkbox name=mm onclick="checkItem('s1')"><br/><br/>
</span>
<span id="s2">
<input type=checkbox name=All onclick="checkAll('s2')">全选<br/>
<input type=checkbox name=mm onclick="checkItem('s2')"><br/>
<input type=checkbox name=mm onclick="checkItem('s2')"><br/>
<input type=checkbox name=mm onclick="checkItem('s2')"><br/>
<input type=checkbox name=mm onclick="checkItem('s2')"><br/>
<input type=checkbox name=mm onclick="checkItem('s2')"><br/>
</span>
</form>
<SCRIPT LANGUAGE="JavaScript">
function checkAll(str)
{
var a = document.all(str);
var n = a.children.length;
for (var i=0; i<n; i++)
a.children[i].checked = window.event.srcElement.checked;
}
function checkItem(str)
{
var e = window.event.srcElement;
var all = document.all(str);
if (e.checked)
{
all.children[0].checked=true;
for (var i=0; i<all.children.length; i++)
if (!all.children[i].checked){ all.children[0].checked = false; break;}
}
else
all.children[0].checked=false;
}
</SCRIPT>
只有考虑用容器都包含了
<form name=hrong>
<span id="s1">
<input type=checkbox name=All onclick="checkAll('s1')">全选<br/>
<input type=checkbox name=mm onclick="checkItem('s1')"><br/>
<input type=checkbox name=mm onclick="checkItem('s1')"><br/>
<input type=checkbox name=mm onclick="checkItem('s1')"><br/>
<input type=checkbox name=mm onclick="checkItem('s1')"><br/>
<input type=checkbox name=mm onclick="checkItem('s1')"><br/><br/>
</span>
<span id="s2">
<input type=checkbox name=All onclick="checkAll('s2')">全选<br/>
<input type=checkbox name=mm onclick="checkItem('s2')"><br/>
<input type=checkbox name=mm onclick="checkItem('s2')"><br/>
<input type=checkbox name=mm onclick="checkItem('s2')"><br/>
<input type=checkbox name=mm onclick="checkItem('s2')"><br/>
<input type=checkbox name=mm onclick="checkItem('s2')"><br/>
</span>
</form>
<SCRIPT LANGUAGE="JavaScript">
function checkAll(str)
{
var a = document.all(str);
var n = a.children.length;
for (var i=0; i<n; i++)
a.children[i].checked = window.event.srcElement.checked;
}
function checkItem(str)
{
var e = window.event.srcElement;
var all = document.all(str);
if (e.checked)
{
all.children[0].checked=true;
for (var i=0; i<all.children.length; i++)
if (!all.children[i].checked){ all.children[0].checked = false; break;}
}
else
all.children[0].checked=false;
}
</SCRIPT>
解决方案 »
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