JS循环网页元素,手动触发事件

for (i=0;i<document.all.tags("input").length;i++)
{
if(document.all.tags("input")[i].type == "checkbox")
{
if(selected && !document.all.tags("input")[i].checked )
document.all.tags("input")[i].click();
else if(!selected && document.all.tags("input")[i].checked )
document.all.tags("input")[i].click();
}
}

<script language="javascript">
function selcheck() {
var objs = myTable.getElementsByTagName("input");
for(var i=0; i<objs.length; i++) {
if(objs[i].type.toLowerCase() == "checkbox" )
objs[i].checked = true;
}
}
</script>