jQuery's selection of all (no selection of all) is to obtain the selected value. Introduction_jquery

Page code

Copy code The code is as follows:

All

< input type="checkbox" name="checkbox" value="day" />day
empty
< input type="checkbox" name="checkbox" value="fly" />fly
come
< input type="checkbox" name="checkbox" value="五" />五
piece
< input type="checkbox" name="checkbox" value="Word" />Word
This
< input type="checkbox" name="checkbox" value="Both" />Both
No
< input type="checkbox" name="checkbox" value="Calculation" />Calculation
Things

Code in js

Copy the code The code is as follows:

/*js part
* Bind batch selected/unselected
* Example
*/

$(function () {
$("#checkall").click(function () {
var stu = $(this).attr("checked");
checkAll (stu);
})
$("input[name='checkbox']").click(function () {
uncheckAll();
})
})
function checkAll(status) {
$("input[name='checkbox']").each(function () {
$(this).attr("checked");
$ (this).attr("checked", status);
})
}

function uncheckAll() {
alert($("input[name='checkbox']: checked").length);
if ($("input[name='checkbox']:checked").length == $("input[name='checkbox']").length) {
$("#checkall").attr("checked",true);
}
else {
$("#checkall").attr("checked", false);
}
}