<!-- 需要加class .itmer, data-from 为 开始数值 不填默认从0开始 data-to
data-speed 动画时间单位 毫秒 -->
<h2 class="timer" data-from="100" data-to="300" data-speed="1500"></h2>
方法
$.fn.countTo = function(a) {
a = a || {};
return $(this).each(function() {
var c = $.extend({},
$.fn.countTo.defaults, {
from: $(this).data("from"),
to: $(this).data("to"),
speed: $(this).data("speed"),
refreshInterval: $(this).data("refresh-interval"),
decimals: $(this).data("decimals")
},
a);
var h = Math.ceil(c.speed / c.refreshInterval),
i = (c.to - c.from) / h;
var j = this,
f = $(this),
e = 0,
g = c.from,
d = f.data("countTo") || {};
f.data("countTo", d);
if (d.interval) {
clearInterval(d.interval)
}
d.interval = setInterval(k, c.refreshInterval);
b(g);
function k() {
g += i;
e++;
b(g);
if (typeof(c.onUpdate) == "function") {
c.onUpdate.call(j, g)
}
if (e >= h) {
f.removeData("countTo");
clearInterval(d.interval);
g = c.to;
if (typeof(c.onComplete) == "function") {
c.onComplete.call(j, g)
}
}
}
function b(m) {
var l = c.formatter.call(j, m, c);
f.html(l)
}
})
};
$.fn.countTo.defaults = {
from: 0,
to: 0,
speed: 1000,
refreshInterval: 100,
decimals: 0,
formatter: formatter,
onUpdate: null,
onComplete: null
};
//原版
/* function formatter(b, a) {
return b.toFixed(2)
} */
function formatter(b, a) {
if(a.to.toString().indexOf('.') != -1){
return b.toFixed(a.to.toString().split(".")[1].length);
}
else{
return b.toFixed();
}
}
$("#count-number").data("countToOptions", {
formatter: function(b, a) {
return b.toFixed().replace(/\B(?=(?:\d{3})+(?!\d))/g, ",")
},
// toFixed(2) 小数点后2位
});
//所有的都需要加上class =“timer” 然后$(".timer").each(count);动态加载
$(".timer").each(count);
function count(a) {
var b = $(this);
a = $.extend({},
a || {},
b.data("countToOptions") || {});
b.countTo(a)
};
动态赋值之后需要 $(".timer").each(count); 重新渲染一下,可以按区域渲染 例如 $(" #main .timer").each(count); ID为 main 下面的数据渲染