演示:<input type=checkbox><br>
<input type=checkbox><br>
<input type=checkbox><br>
<input type=checkbox><br>
<input type=checkbox><br>
<input type=button name=mm value=梅花雪 disabled><SCRIPT LANGUAGE="JavaScript"><!--
function meizz()
{
var a = document.getElementsByTagName("input");
if(window.event.srcElement.tagName == "INPUT")
{
for(var i=0; i<a.length; i++)
{
if(a[i].type=="checkbox" && a[i].checked)
{
document.all.mm.disabled = false;
return;
}
}
document.all.mm.disabled = true;
}
}
document.onclick = meizz;
document.onload = meizz;
//--></SCRIPT>
<input type=checkbox><br>
<input type=checkbox><br>
<input type=checkbox><br>
<input type=checkbox><br>
<input type=button name=mm value=梅花雪 disabled><SCRIPT LANGUAGE="JavaScript"><!--
function meizz()
{
var a = document.getElementsByTagName("input");
if(window.event.srcElement.tagName == "INPUT")
{
for(var i=0; i<a.length; i++)
{
if(a[i].type=="checkbox" && a[i].checked)
{
document.all.mm.disabled = false;
return;
}
}
document.all.mm.disabled = true;
}
}
document.onclick = meizz;
document.onload = meizz;
//--></SCRIPT>
解决方案 »
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