javaScriptはcheckboxの多くの選択を実現します.

<script language="javaScript"> 

//        
function checkall() { 
	var isChecked=(document.form1.checkAll.checked == true); 
	var elements_all=document.form1.elements; 
	for(i=0;i<elements_all.length;i++) { 
		var element=elements_all[i]; 
		if(element.type=="checkbox")  { 
			element.checked=isChecked; 
		} 
	} 
} 

//   checkbox    
function anyChecked() { 
	var elements_any=document.form1.elements; 
	for(i=0;i<elements_any.length;i++) { 
		var element=elements_any[i]; 
		if(element.checked == true) { 
			return true; 
		} 
	} 
	return false; 
} 

</script>

<form name="form1" Method="post" action="" onsubmit="return anyChecked()"> 
  :<input type="checkbox" id="checkAll"onclick="checkall()" /> 
       : 
<input type="checkbox" name="cb" value="1"/> 
<input type="checkbox" name="cb" value="2"/> 
<input type="checkbox" name="cb" value="3"/> 
<input name="Submit" type="submit" value="submit"> 
</form>