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jQuery Style - 如何得到一個(gè)左邊框運(yùn)行，直到頁面的結(jié)尾？...

我們想知道如何得到一個(gè)左邊框運(yùn)行，直到頁面的結(jié)尾？... 

<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
  src='http://code.jquery.com/jquery-1.7.1.js'></script>
<script type='text/javascript'>
$(window).load(function(){
    $(document).ready(function(){
        $('#colorcontainer > div').click(function() {
            var name = $(this).css('background-image');
            console.log(name);
        });
    });
});
</script>
</head>
<body>
  <div style="position: relative; width: 700px;" id="colorcontainer">
    <div class='color'
      style='background: url(http://m.hgci.cn/style/download.png); background-size: 100 72; background-repeat: no-repeat;'>
      <span class='txt'> <br />this is a test
      <br />this is a test
      <br />this is a test
      <br />this is a test
      <br />this is a test
      <br />this is a test
      <br />this is a test
      <br />this is a test
      <br />this is a test
      </span>
      
    </div>
  </div>
</body>
</html>