There is a defaultexpanded paramter in the ddaccordian.init function. You just need to set that.
Here is the example on the script's page. Notice the highlighted part.
Code:
ddaccordion.init({ //top level headers initialization
headerclass: "expandable", //Shared CSS class name of headers group that are expandable
contentclass: "categoryitems", //Shared CSS class name of contents group
collapseprev: true, //Collapse previous content (so only one open at any time)? true/false
defaultexpanded: [0], //index of content(s) open by default [index1, index2, etc]. [] denotes no content
animatedefault: false, //Should contents open by default be animated into view?
persiststate: true, //persist state of opened contents within browser session?
toggleclass: ["", "openheader"], //Two CSS classes to be applied to the header when it's collapsed and expanded, respectively ["class1", "class2"]
togglehtml: ["prefix", "", ""], //Additional HTML added to the header when it's collapsed and expanded, respectively ["position", "html1", "html2"] (see docs)
animatespeed: "normal", //speed of animation: "fast", "normal", or "slow"
oninit:function(headers, expandedindices){ //custom code to run when headers have initalized
//do nothing
},
onopenclose:function(header, index, state, isclicked){ //custom code to run whenever a header is opened or closed
//do nothing
}
})
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