JavaScript 处理图片相关操作

来源：互联网发布：数据基站编辑：程序博客网时间：2024/06/07 23:39

1.去掉热点地图上的区域线框与超链接的线框:
<a href="#" onfocus="this.blur()"><img src="Images/aaa.jpg" border="0"></a>

2.去除当鼠标放到图片上时出现快捷工具（打印、邮寄、另存等）
<img src="Images/aaa.jpg" galleryImg="no" border="0">

3.动态改变照片的亮度(透明度)
    <img id="imgInfo" src="Images/Train.jpg" style="filter: alpha(opacity=50)"/>
    <input id="Button1" type="button" value="亮度+" onclick="rdl_change(1)" />
    <input id="Button2" type="button" value="亮度-" onclick="rdl_change(0)"/>
<script>
function rdl_change(m)
{
    var oDiv=document.getElementById("imgInfo");
    switch(m)
    {
        case 0 :
             //照片变透明
             oDiv.filters.alpha.opacity=oDiv.filters.alpha.opacity-10;
            break;
        case 1 :
             //照片变亮
              oDiv.filters.alpha.opacity=oDiv.filters.alpha.opacity+10;
            break;
        default: break;
    }
}
</script>

4.放上鼠标显示原照片移开鼠标让照片半透明
<img src="Images/aaa.jpg"   id="content"
      onMouseOver="runtimeStyle.filter='alpha(opacity=100)'"
      onMouseOut="runtimeStyle.filter='alpha(opacity=40)'">

5.页面加载图片渐渐显示
<body onLoad="fade()">
<img src="Images/Train.jpg" name="img" border="0" alt="Image" style="filter:alpha(opacity=0)" width="330" height="400">
<script type="text/javascript">
var b = 1;
var c = true;
function fade()
{
    if(document.all);

    if(c == true)
    {
         b++;
    }
    if(b==100)
    {
         b--;
         c = false
    }
    if(b==10)
    {
          b++;
          c = true;
    }
//    if(c == false)
//    {
//           b--;
//    }
    img.filters.alpha.opacity=0 + b;
    setTimeout("fade()",50);
}
</script>
</body>

6.图片随鼠标滚轴移动而变化大小：
   function ZoomImg(img)
    {
        var zoom = parseInt(img.style.zoom, 10) || 100;
        zoom += event.wheelDelta / 12;
        if(zoom > 0)
            img.style.zoom = zoom + '%';
        return false;
    }
<img src="人民的壁纸.bmp" border="0" id="chen" runat="server"   galleryImg="no"
         onmousewheel="return ZoomImg(this)"/>