JS 像素数字

Posted on 2010-09-27 14:01 PHP-张工阅读(1709) 评论(1) 编辑收藏举报

输入数字：

源码：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
 
<html xmlns="http://www.w3.org/1999/xhtml" >
<body>
    <div>
    输入数字：<input id="txtNum" type="text" onkeyup="showNum();" value="856" />
    <div id="divNum" style="height:20px; position:relative; margin-top:5px;"></div>
    <script type="text/javascript">
    function showNum()
    {
        var txtNum = document.getElementById('txtNum');
        var divNum = document.getElementById('divNum');
        if(isNaN(txtNum.value))
        {
            return;
        }
        divNum.innerHTML = '';
        var width = Math.floor(divNum.offsetHeight / 5);
        for(var i=0; i<txtNum.value.length; i++)
        {
            var index = parseInt(txtNum.value[i]);
            var strNum = arrNum[index];
            for(var j=0; j<strNum.length; j++)
            {
                if(strNum[j] == '1')
                {
                    var div = getDiv(width);
                    div.style.left = j % 3 * width + i * width * 4;
                    div.style.top = Math.floor(j / 3) * width;
                    divNum.appendChild(div);
                }
            }
        }
    }
     
    var arrNum = [
        '111101101101111',
        '001001001001001',
        '111001111100111',
        '111001111001111',
        '101101111001001',
        '111100111001111',
        '111100111101111',
        '111001001001001',
        '111101111101111',
        '111101111001111'
    ];
     
    function getDiv(width)
    {
        var div = document.createElement('div');
        div.style.width = width;
        div.style.height = width;
        div.style.backgroundColor = 'red';
        div.style.position = 'absolute';
         
        return div;
    }
     
    showNum();
    </script>
    </div>
    </form>
</body>
</html>

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JS 像素数字