滚动一次时如何运行jquery countTo插件？

Question

滚动一次时如何运行jquery countTo插件？

$(window).scroll(function(){
   $(".fact-to:in-viewport").countTo({
        speed: 500,
        refreshInterval: 2
   });
});

Answer 1

添加标志：

var countFlag = false;

$(window).scroll(function(){
  if(!countFlag) {
    countFlag = true;
    $(".fact-to:in-viewport").countTo({
      speed: 500,
      refreshInterval: 2
    });
  }
});

或unbind event handler