:checked Selector
checked selector
version added: 1.0jQuery(':checked')
描述： 選擇所有勾選的元素。
這個(gè) :checked 選擇器適用于復(fù)選框和單選框。對于下拉框元素, 使用 :selected 選擇器。
Example:
Finds all input elements that are checked.
<!DOCTYPE html>
<html>
<head>
<style>
div { color:red; }
</style>
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
</head>
<body>
<form>
<input type="checkbox" name="newsletter" checked="checked" value="Hourly" />
<input type="checkbox" name="newsletter" value="Daily" />
<input type="checkbox" name="newsletter" value="Weekly" />
<input type="checkbox" name="newsletter" checked="checked" value="Monthly" />
<input type="checkbox" name="newsletter" value="Yearly" />
</form>
<div></div>
<script>
function countChecked() {
var n = $("input:checked").length;
$("div").text(n + (n <= 1 ? " is" : " are") + " checked!");
}
countChecked();
$(":checkbox").click(countChecked);
</script>
</body>
</html>Demo:
Result:
<input type="checkbox" name="newsletter" checked="checked" value="Daily" />,
<input type="checkbox" name="newsletter" checked="checked" value="Monthly" /> ]