javascript - 创建一个计算浏览器视口(viewport)尺寸的动画

Question

我目前有一个返回浏览器窗口高度和宽度的小脚本。我遇到的麻烦是实现一种高度和宽度从零到当前负载尺寸的计数方法。它的功能类似于:http://jsfiddle.net/YWn9t/但目标数量将是上述尺寸。这可以使用比 jsfiddle 更少的代码来完成吗？

HTML:

<div>
    <span></span>
    <span></span>
</div>

CSS:

body {text-align: center;}

div {border: 2px solid #000; display: inline-block; padding: 5px 20px; vertical-align: middle;}

span:first-of-type:after {content: "|"; margin: 0 10px;}

jQuery:

$(document).ready(function (e) {
    showViewportSize();
});

$(window).resize(function (e) {
    showViewportSize();
});

function showViewportSize() {
    var the_width = $(window).width();
    var the_height = $(window).height();
    $('span:first-of-type').text(the_width);
    $('span:last-of-type').text(the_height);
}

Answer 1

新FIDDLE .

JS

$('#start').on('click', function(){

  var windowheight = $(window).height();
  var windowwidth  = $(window).width();
  $('.putmehere1').html('height: ' + 
                         windowheight + 
                         'width: ' + 
                        windowwidth);

  var startwidth = 0;
  var endwidth = windowwidth;
  var startheight = 0;
  var endheight = windowheight;
  var timer;
  var timer2;

timedCount();
timedCount2();


function timedCount()
{
   startwidth = startwidth + 1;
   timer = setTimeout(function(){timedCount()}, 20);
   $('.putwidth').html(startwidth);
   if (startwidth == endwidth)
      {
       clearTimeout(timer);
       startwidth = endwidth;
       }
}

function timedCount2()
{
   startheight = startheight + 1;
   timer2 = setTimeout(function(){timedCount2()}, 20);
   $('.putheight').html(startheight);
   if (startheight == endheight)
   {
       clearTimeout(timer2);
       startheight = endheight;
    }
}

 });