jquery - 简化 jQuery 函数

Question

我有以下功能:

var randomImages = ["bgr1","bgr2","bgr3","bgr4","bgr5","bgr6"];
var rndNum = Math.floor(Math.random() * randomImages.length);
$(".myDiv").css({ background: "url(/images/" + randomImages[rndNum] + ".gif)" });

由于除了最后一个数值之外，所有图像都具有相同的名称，我不能简化它吗？

Answer 1

var numImages = 6;
var rndNum = Math.floor(Math.random() * numImages) + 1;
$(".myDiv").css({ background: "url(/images/bgr" + rndNum + ".gif)" });