【jQuery】页面刷新图片随机显示

html

<div class="randomPic">
    ![](images/pic1.png)
</div>

JS

window.onload = function(){
    var a = new Array();
    a[0] = 'pic1.png';
    a[1] = 'pic2.png';
    var b = Math.floor(Math.random()*10+1);
    $("#imgId").attr('src','images/' + a[b%2]);     //%为取余
}