小编sha*_*baz的帖子

我想用单选按钮选择更改html的backgroundImage.每个单选按钮都有不同的图像.我试过它:

      <input name="BG" id="wood" type="radio" value="" class="bgCollection" />
      <label for="radio">Wood</label>

      <input name="BG" id="steel" type="radio"  class="bgCollection"/>
      <label for="radio">Steel</label>

      <input name="BG" id="metal" type="radio" value="" class="bgCollection"/>
      <label for="radio">Black metal</label>

jQuery的:

    $(document).ready(function(){
            $(".bgCollection").change(
               function()
          {
        if($("input#wood").attr("checked"))  
                  {$("html").css('backgroundImage','url(../images/wood.jpg)');}
        if($("input#steel").attr("checked")
                   {$("html").css('backgroundImage','url(../images/BG-steel.jpg)');}
        if($("input#metal").attr("checked"))
                   {$("html").css('backgroundImage','url(images/blackMetal.jpg)');}
       });
  });

但这样背景并没有改变.