// for example:

$(‘body‘).load(‘http://xxx.svg‘);

// for example:

$(‘circle‘).each(function (idx, item) {
    var bn_id = $(item).attr(‘bn_id‘)
    if (json_infos[bn_id] != undefined) {
        $(item).attr(‘stroke‘, json_infos[bn_id].fg_colors)
        $(item).attr(‘title‘, json_infos[bn_id].title)
    }
});