flexibleSearch.js で本文の100文字だけ表示して、後ろに ... を付けるサンプル

flexibleSearch-conf.js

(function ($) {
    $('#search').flexibleSearch({
        searchDataPath: "/flexibleSearch/search.json",
        searchFormAction: "/flexibleSearch/search.html",
        loadingImgPath: "/flexibleSearch/loading.gif",
        resultItemTmpl: [
            '<dl>',
                '{{#items}}',
                '<dt><a href="{{url}}" title="{{title}}">{{&title}}</a></dt>',
                '<dd><span>{{&body}}...</span><a href="{{url}}">[続きを読む]</a></dd>',
                '{{/items}}',
            '</dl>'
        ].join(""),
        modifyResultItemHTML: function(html){
            return html.replace(/<span>.*?<\/span>/gi, function(match){
                match = match.replace(/<\/?span>/g, '');
                if (match.length > 100) {
                    match = match.substring(0, 100) + '...';
                }
                return '<span>' + match + '</span>';
            });
        },
        dummy: null
    });
})(jQuery);