/**
* 全選
*/
function selectAll(){
var oInput=document.getElementsByName("cartCheckBox");
for (var i=0;i<oInput.length;i++){
oInput[i].checked=document.getElementById("allCheckBox").checked;
}
}
/**
* 單選
*/
function selectSingle(){
var k=0;
var oInput=document.getElementsByName("cartCheckBox");
for (var i=0;i<oInput.length;i++){
if(oInput[i].checked==false){
k=1;
break;
}
}
if(k==0){
document.getElementById("allCheckBox").checked=true;
}
else{
document.getElementById("allCheckBox").checked=false;
}
}頁面
<html>
<head>
<script>
function selectAll(){
var checklist = document.getElementsByName ("cartCheckBox");
for(var i=0;i<checklist.length;i++)
{
checklist[i].checked = document.getElementById("allCheckBox").checked;
}
}
function selectSingle(){
var checklist = document.getElementsByName ("cartCheckBox");
var k = 0;
for(var i=0;i<checklist.length;i++){
if(checklist[i].checked == false){
k++;
break;
}
}
if(k > 0){
document.getElementById("allCheckBox").checked=false;
}else{
document.getElementById("allCheckBox").checked=true;
}
}
</script>
</head>
<body>
<form>
<input οnclick="selectAll()" type="checkbox" name="allCheckBox" style="allCheckBox" id="allCheckBox"/>全選<br>
1:<input type="checkbox" name="cartCheckBox" value="1" οnclick="selectSingle()"/><br>
2:<input type="checkbox" name="cartCheckBox" value="2" οnclick="selectSingle()"/><br>
3:<input type="checkbox" name="cartCheckBox" value="3" οnclick="selectSingle()"/><br>
4:<input type="checkbox" name="cartCheckBox" value="4" οnclick="selectSingle()"/><br>
5:<input type="checkbox" name="cartCheckBox" value="5" οnclick="selectSingle()"/><br>
6:<input type="checkbox" name="cartCheckBox" value="6" οnclick="selectSingle()"/><br>
</form>
</body>
</html>