<input id="check" onclick="checkAll()" type="checkbox" name="checkbox1" value="https://bbs.csdn.net/topics/checkbox"/>
<input id="check" onclick="checkAll()" type="checkbox" name="checkbox2" value="https://bbs.csdn.net/topics/checkbox"/>
<script>
function checkAll() {
var checked = document.getElementById("check").checked;
var checkson = document.getElementsByName("checkbox2");
if(checked) {
for(var i = 0; i < checkson.length ;i++) {
checkson[i].checked = true;}}
else {
for(var i = 0; i < checkson.length ;i++) {
checkson[i].checked = false;}}
}
</script>
uj5u.com熱心網友回復：
一個不就行了嗎？判斷checkAll的值用于判斷，false就全部不選true就全部選中uj5u.com熱心網友回復：
想這樣實作：
uj5u.com熱心網友回復：
<input id="check1" onclick="checkAll(this.checked)" type="checkbox" name="checkbox1" value="https://bbs.csdn.net/topics/checkbox"/>
<input id="check2" onclick="checkAll(this.checked)" type="checkbox" name="checkbox1" value="https://bbs.csdn.net/topics/checkbox"/>
<hr>
<input type="checkbox" name="checkbox2" value="https://bbs.csdn.net/topics/checkbox"/>
<input type="checkbox" name="checkbox2" value="https://bbs.csdn.net/topics/checkbox"/>
<input type="checkbox" name="checkbox2" value="https://bbs.csdn.net/topics/checkbox"/>
<script>
function checkAll(checked) {
document.getElementById("check1").checked = checked;
document.getElementById("check2").checked = checked;
var checkson = document.getElementsByName("checkbox2");
if(checked) {
for(var i = 0; i < checkson.length ;i++) {
checkson[i].checked = true;}}
else {
for(var i = 0; i < checkson.length ;i++) {
checkson[i].checked = false;}}
}
</script>
uj5u.com熱心網友回復：
老哥厲害啊，謝了轉載請註明出處，本文鏈接：https://www.uj5u.com/qianduan/94063.html
標籤：JavaScript