layer. 点击展示图片, context.currentSrc 获取图片路径

<img class="layer_open_onepic" src="https://cdn.caomall.net/factory_1584597600108109889.png" alt="" width="100" style="margin-left:6px;">


    // layer 单图片展示,共用
    $(document).on('click','.layer_open_onepic',function(){
        var img = $(this).context.currentSrc;
        var content = '<img src="' + img + '" style="display:block;width:100%;margin:auto;" id="onepic_img" >';

        layer.open({
            type        : 1,
            title       : false,
            closeBtn    : 0,
            //area      : '516px',
            skin        : 'layui-layer-nobg', //没有背景色
            shadeClose  : true,
            content     : content
        });
    });