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<!DOCTYPE html>
< html lang = 'en' > < head > < meta http-equiv = 'content-type' content = 'text/html; charset=UTF-8' / > < / head > < body >
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< div data-role = "page" >
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< div data-role = "header" >
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< h1 > :checked Selector< / h1 >
< / div >
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< div data-role = "content" data-theme = "c" id = "checked1" >
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< h2 class = "jq-clearfix roundTop section-title" >
< span class = "name" > checked< / span > selector< / h2 >
< div class = " entry-details" >
< h4 class = "name" >
< span class = "versionAdded" > version added: < a href = "/version/1.0/" > 1.0< / a > < / span > jQuery(':checked')< / h4 >
< p class = "desc" > < strong > Description: < / strong > Matches all elements that are checked.< / p >
< div class = "longdesc" > < p > The < code > :checked< / code > selector works for checkboxes and radio buttons. For select elements, use the < code > :selected< / code > selector.< / p > < / div >
< h3 > Example:< / h3 >
< div id = "entry-examples" class = "entry-examples" > < div id = "example-0" >
< h4 > < span class = "desc" > Finds all input elements that are checked.< / span > < / h4 >
< pre > < code class = "example demo-code" > < !DOCTYPE html>
< html>
< head>
< style>
div { color:red; }
< /style>
< script src="http://code.jquery.com/jquery-latest.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> < / code > < / pre >
< h4 > Demo:< / h4 >
< div class = "demo code-demo" > < / div >
< h4 > Result:< / h4 >
< pre > < code class = "results" > < input type="checkbox" name="newsletter" checked="checked" value="Daily" /> ,
< input type="checkbox" name="newsletter" checked="checked" value="Monthly" /> ]< / code > < / pre >
< / div > < / div >
< / div >
< / div >
< / div >
< / body > < / html >
