<script type="text/javascript">
function getChk(){
var arr = new Array();
var chks = document.getElementsByTagName("input");
for(var i=0; i<chks.length; i++){
if(chks[i].type == "checkbox"){
arr.push(chks[i]);
}
}
alert(arr.length);
}
</script>
<input type="checkbox" />
<input type="button" onclick="getChk()" />
function getChk(){
var arr = new Array();
var chks = document.getElementsByTagName("input");
for(var i=0; i<chks.length; i++){
if(chks[i].type == "checkbox"){
arr.push(chks[i]);
}
}
alert(arr.length);
}
</script>
<input type="checkbox" />
<input type="button" onclick="getChk()" />
function getChk(){
var arr = new Array();
var chks = document.getElementsByTagName("input");
for(var i=0; i<chks.length; i++){
if(chks[i].type == "checkbox"){
arr.push(chks[i]);
}
}
alert(arr.length);
for(var j=0; j<arr.length; j++){
if(arr[j].checked == true){
alert(arr[j].name+"被选中了");
}
}
}
</script>
<script type="text/javascript">
function getChk(){
var arr = new Array();
var chks = document.getElementsByTagName("input");
for(var i=0; i<chks.length; i++){
if(chks[i].type == "checkbox"&&chks[i].checked == true){
arr.push(chks[i]);
}
}
alert(arr.length);
}
</script>
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="checkbox" />
<input type="button" onclick="getChk()" />
function getChk(){
var arr = new Array();
var chks = document.getElementsByTagName("input");
for(var i=0; i<chks.length; i++){
if(chks[i].type == "checkbox"){
arr.push(chks[i]);
}
}
alert(arr.length);
for(var j=0; j<arr.length; j++){
if(arr[j].checked == true){
alert(arr[j].name+"被选中了");
}
}
}
</script>
<input name="a" type="checkbox" />
<input name="sa" type="checkbox" />
<input name="aa" type="checkbox" />
<input name="a" type="checkbox" />
<input name="aaa" type="checkbox" />
<input name="ar" type="checkbox" />
<input type="button" onclick="getChk()" />
================================================
if(arr[j].checked == true){
arr[j].checked == false;
}
function uncheck()
{
//var ele = document.KYCG.elements; //遍历所有表元素 for(var i=0;i<eles.length;i++)
//alert(ele.length);
var arr = new Array();
var ab=document.all.getElementsByTagName("input")
for(i=0;i<ab.length;i++)
{
if(ab[i].type=="checkbox")
{
arr.push(ab[i]);
}
}
for(var j=0; j<arr.length; j++){
arr[j].checked = false;
}}
把all去掉