<html>
<input id="checkboxid" name="checkboxid" type="checkbox" onclick="javascript:checkBut();">
<label for="divControl">button</label>
<div id="mydiv" style="display:none;">dfdfdfdfdfdfdfdf</div>
<script>
function checkBut(){
var checkstatus = document.all.checkboxid.checked;
target=document.getElementById("mydiv");
if(checkstatus == true){
target.style.display="block";
}else {
target.style.display="none";
}
}
</script>
</html>
将代码拷贝保存成html格式,就可以看到效果;