<html>
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
var checkflag = "false";
function check(field) {
if (checkflag == "false") {
if (field.value==1)
{
field.checked=true;
checkflag="true";
}
else
{
for (i = 0; i < field.length; i++)
{
field[i].checked = true;}
checkflag = "true";
return "false"; }
}
else
{
if (field.value==1)
{
field.checked=false;
checkflag="false";
}
else
{
for (i = 0; i < field.length; i++) {
field[i].checked = false; }
checkflag = "false";
return "true"; }
}
}
// End -->
</script>
<body>
<form name="form" method="post" action="">
<input type="checkbox" name="list" value="1">
<input type="checkbox" name="list" value="1">
<input type=button value="全选" onClick="check(this.form.list)">
</body></html>
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
var checkflag = "false";
function check(field) {
if (checkflag == "false") {
if (field.value==1)
{
field.checked=true;
checkflag="true";
}
else
{
for (i = 0; i < field.length; i++)
{
field[i].checked = true;}
checkflag = "true";
return "false"; }
}
else
{
if (field.value==1)
{
field.checked=false;
checkflag="false";
}
else
{
for (i = 0; i < field.length; i++) {
field[i].checked = false; }
checkflag = "false";
return "true"; }
}
}
// End -->
</script>
<body>
<form name="form" method="post" action="">
<input type="checkbox" name="list" value="1">
<input type="checkbox" name="list" value="1">
<input type=button value="全选" onClick="check(this.form.list)">
</body></html>
<!-- Begin
var checkflag = false;
function check(field) {
checkflag = !checkflag;
if(field.length)
{
for (i = 0; i < field.length; i++) {
field[i].checked = checkflag;
}
}
else
{
field.checked = checkflag;
}
}
// End -->
</script>
如果当前页面没有checkbox,需要对传入的obj做一个校验:if(field){
if(field.length){
//....codes....
}
}else{
alert("没有checkbox");
}另外还有一种方法比较麻烦,但既然做吗,就要知道的多一点:),如下:
try{
for (i = 0; i < field.length; i++) {
field[i].checked = checkflag;
}}catch(Exception e){
field.checked = checkflag;}