var graphicprice = arry.graphicprice; //if graphicprice != undefined,那么graphicprice = arry.graphicprice,否则 graphicprice = 0 (graphicprice != undefined) ? graphicprice = arry.graphicprice : graphicprice = 0; $('#evaluate li:nth-child(1)').attr('name', arry.imageservice).find('span').html(graphicprice + '元/50分钟'); //图文