小编tes*_*est的帖子

 perc = 15/30;
 //result=Math.round(perc*100)/100  //returns 28.45
 $('#counter').text(perc);
 $('#total').text(count);

返回0.5%,这是假设50.00%...我该如何解决这个问题？:S

我厌倦了使用布局管理器.我永远无法得到任何正确的...所以..任何人都可以向我建议applets的免费GUI构建器吗？

不建议Eclipse或Netbeans,因为我有Vista(64位).我不能跑他们=(

谢谢!

除了删除之外,我把JMenu打倒了.:DI意味着,我可以做,popup.remove(NUMBER)但这可能会导致NPE错误.那么,有没有一种方法来删除所有JMenuItems来自JMenu？

checkPopup()如果有人有兴趣,这是我的更新:

            private void checkPopup(MouseEvent e)
    {
        if (e.isPopupTrigger())
        {

            int itemSelectx = listbox.getSelectedIndex();
            Object actItemx = listbox.getModel().getElementAt(itemSelectx);
            System.out.println("You pressed on " + actItemx);

        if (actItemx == "Item 1") {
            popup.add(cancelMenuItem); // add the ability to cancel an item
            popup.add(dropMenuItem); // add ability to drop the item
        }

            popup.show(inv.this, e.getX(), e.getY()); // show item at mouse
            popup.revalidate(); // revalidate
            //popup.remove(0); // removing first (0) menu item
        }
    }

差不多了!:)(是的,我试过Google和JavaDocs)

到目前为止我有这个:

<style>
#success_notification {
position:absolute;
top:0;
width:30%;
text-align:center;
    font:20px Georgia;
    color:#5C5C5C;
    background:#F2FFED;
    padding:10px;
}

</style>

<div style="margin:0 auto;"><div id='success_notification'>TESTING.</div></div>

并且div留在左边......仍然.我究竟做错了什么？谢谢.

好的，我有一个 HTML5 画布……它从.png图块 (32x32) 中绘制图像。有用。有点。它仅在第二次刷新后在画布上绘制。例如，如果你要加载它......你会看到一个红色的画布（背景#canvas是红色）然后如果你要刷新它......它会成功绘制图像......为什么是那？

这是代码。（您只需要两张图片。t0.png并t1.png在line_tiles文件夹中）但我相信您可以立即发现我无法发现的错误：P

game.js

// HTML5 JS Tile Example
var canvas, context, board, imageObj, tiles;
var currentMap = 1;
var upMap = 0;
var rightMap = 0;
var leftMap = 0;
var downMap = 3;
var NUM_OF_TILES = 1; // starting from ZERO

// Set return 2D array of map
function loadMap(map) {
    if (map == 1) {
        return [
        [1, 1, 1, 1, 1, 1, 1, …

我目前有一个JavaScript arrayList()调用players,我在其中push使用以下数据进行数据处理:players.push({name: msg.name, map: msg.map, coords: msg.coords});

这是一个示例数据:{ name: 'weka', map: '5', coords: '12.4' }例如players[0].

这是我在做的事情:

for (var i = 0; i < players.length; ++i) {
  if (msg.name === players[i].name) {
    console.log("Updating  index ("+i+") player: " + msg.name);
    //players[i].push({name: msg.name, map: msg.map, coords: msg.coords});
  }
}

我有这个175x175的背景图像,但我试图用它制作一个"CD"封面.在下面的代码(jsFiddle available)中,您将看到它没有调整大小,只是"裁剪".我该如何解决？

HTML:

<div class="cd"><div class="hole"></div></div>
<p>I want the image above to be resized to 75x75... but it's not</p>

<img src="http://userserve-ak.last.fm/serve/126/23679395.jpg" alt="Test" />
<p>Actual image size above.</p>

CSS:

.cd {
    -moz-border-radius: 63px;
    -webkit-border-radius: 63px;
    border-radius: 63px;
    background-image: url('http://userserve-ak.last.fm/serve/126/23679395.jpg');
    width: 75px;
    height: 75px;
    position: relative;
    border:1px solid #A1A1A1;
}
.cd .hole {
    width: 20px;
    height: 20px;
    position: absolute;
    background-color: #ddd;
    border:1px solid #A1A1A1;
    left: 28px;
    top: 28px;
    -moz-border-radius: 15px;
    -webkit-border-radius: 15px;
    border-radius: 15px;
}

从Microsoft.com下载了Windows XP SP3 ISO映像http://www.microsoft.com/en-us/download/details.aspx?id=25129我正在使用Oracle的VM VirtualBox创建新VM.我使用VM加载它并选择媒体作为545 MB.我刚刚下载了.我得到"致命:找不到可启动媒体!系统停止了."

救命？

假设我的JSON是这样的:

{
  "achievement": [
    {
      "title": "All Around Submitter",
      "description": "Get one piece of content approved in all six areas.",
      "xp": 500,
      "level_req": 1
    },
    {
      "title": "World-wide Photo Journalist",
      "description": "Get one photo approved in all six areas.",
      "xp": 500,
      "level_req": 1
    },
    {
      "title": "Ready for Work",
      "description": "Sign up and get validated",
      "xp": 50,
      "level_req": 1
    },
    {
      "title": "Asian Pride",
      "description": "Get ten pieces of content approved to a club in an Asian nation.",
      "xp": 1500, …

假设我有这个JSON:

{
  "achievement": [
    {
      "title": "Ready for Work",
      "description": "Sign up and get validated",
      "xp": 50,
      "difficulty": 1,
      "level_req": 1
    },
    {
      "title": "All Around Submitter",
      "description": "Get one piece of textual content approved in all five areas.",
      "xp": 500,
      "difficulty": 2,
      "level_req": 1
    }
}

我正在通过PHP尝试这个:

$string = file_get_contents("achievements.json");
$json_a=json_decode($string,true);

$getit = $json_a->achievement['title'][1];

我正在努力获得成就的第一个"身份"......这将是READY FOR WORK.

我该如何解决？