var arr =[123,54,5,111,343];//获取最小值Math.min.apply(null,arr)；//获取最大值Math.max.apply(null,arr)；    var dataint = {'data':[{'src':'24.jpg'},{'src':'25.jpg'},{'src':'26.jpg'},{'src':'27.jpg'},{'src':'28.jpg'},{'src':'29.jpg'},{'src':'30.jpg'},{'src':'31.jpg'},{'src':'32.jpg'},{'src':'33.jpg'},{'src':'34.jpg'},{'src':'35.jpg'},{'src':'36.jpg'},{'src':'37.jpg'},{'src':'38.jpg'}]};可以获取dataint.data[i].src

var scrolltop = document.body.scrollTo || document.documentElement.scrollTop;  var clientHeight = document.body.clientHeight || document.documentElement.clientHeight原生js获取滚动条高度和页面高度都需要兼容