jQuery Accordion第一面板自动打开

Question

Can i set first panel on Jquery automatically opened? My accordion panel is close all.

This is my html

<div class="accordionx">
<div class="acitemx">
    <h3>First Panel</h3>
    <div class="accx">
        This is the content
    </div>
</div>
<div class="acitemx">
    <h3>Second Panel</h3>
    <div class="accx">
        This is the content
    </div>
</div>
<div class="acitemx">
    <h3>Third Panel</h3>
    <div class="accx">
        This is the content
    </div>
</div>

This is my JS script

$(".acitemx h3").click(function () {
$header = $(this);
$content = $header.next();
$content.slideToggle(500, function () {
    $(this).parent().toggleClass('current');
});

});

This the JSFiddle Link http://jsfiddle.net/bupd32rq/

Thanks for your help

Answer 1

Panels that opened were added with current class, then put class current manually on first panel and respective div with style="display:block" :

<div class="acitemx current">
    <h3>First Panel</h3>
    <div class="accx" style="display:block">
        This is the content
    </div>
</div>

Updated DEMO

Answer 2

you can just add .eq(0).click()

$(".acitemx h3").click(function () {
    $header = $(this);
    $content = $header.next();
    $content.slideToggle(500, function () {
        $(this).parent().toggleClass('current');
    });
}).eq(0).click();

DEMO