js纯数字逐一停止显示效果的实现代码

 function showScore($ele, num, secand, pause){ //second 按照秒数，动画运行多少秒 if (!secand) { secand = 2;} if (!pause) { pause = 20;} var len = String(num).length; var temnum, times = 0 , stepTimes, max ; var numArr = String(num).split(""); function getRandom(n){ var num = Math.floor(Math.random()*(Math.pow(10, n)-1 - Math.pow(10, n-1))+Math.pow(10, n-1)); if (String(num).length !== n) {num = getRandom(n);} return num; } function setValue(num, pause, secand){//second 运行多少秒后停止 var len = String(num).length, j=0; if (!stepTimes) { max = Math.ceil(secand*1000/len); stepTimes = Math.ceil(max/pause); } temnum = ""; setTimeout(function(){ for (var i = 1; i <= len; i++) { if (times >= stepTimes*i) { j++; temnum += numArr[i-1]+""; }else{ break; } }; if (j = max || j >= len) {return;}; setValue(num, pause, secand); times++; }, pause); } setValue(num, pause, secand); } showScore($(".num"), 2344, 1.5, 10);