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我正在用 JavaScript 编写浏览器游戏，需要创建一个卡片类。这个类有（和其他变量）一个图像，当我创建一个对象时应该显示它。单击图像时如何显示对象的图像并调用函数？

使用此代码，我可以在任何我想要的位置显示图像，但是当我打开 .htm 文件而不是单击图像时，会立即调用 OnClick 函数。

<html>
<head> </head>
<body>
<script type="text/javascript">      
  function Card(photo){ // this is my object
      this.randomVariable=42;
      this.pic = new Image(); // creating an Image object inside my Card class.
        this.pic.src=photo;
        this.pic.height = 300;
        this.pic.width = 200;
        this.pic.style.position="absolute";  // this 3 lines should set the image's position, and it does.
        this.pic.style.top = 50 + "px"; 
        this.pic.style.left = 50 + "px";
        this.OnClick = document.write("lala");
  }

  var myObject = new Card("cardback.jpg");
  myObject = document.body.appendChild(coso1.pic); // is this how I should create the image? It appears where I want, but it doesn't seem a "clean" programming.
  myObject.OnClick = document.write("lala" + coso1.pic.offsetLeft + coso1.pic.offsetTop); // this is casted when I open the file, and not when I click on the image. *sadface*

</script>
</body>
</html>

请帮助检测我何时单击图像并以不那么脏的方式显示图像（如果可能的话）？

提前致谢！

4

2 回答 2

0

对您的代码进行了一些更改。希望能帮助到你！

<html>
<head> </head>
<body>
<script type="text/javascript">    
  function Card(photo){
     var cardInstance = new Image();
     cardInstance.src = photo;
     cardInstance.addEventListener('click', function (e) {
          alert(1);
      });
     return cardInstance;
  }  

  var myObject = new Card("cardback.jpg");
  document.body.appendChild(myObject);

</script>
</body>
</html>
于 2013-03-28T00:16:29.310 回答
0

http://jsfiddle.net/CTWWk/1/

var image = new Image();
image.src = 'https://www.google.co.il/images/srpr/logo4w.png';

image.onclick = function(){
      alert('I Clicked an image now !');  
};

var divy = document.getElementById('divy');
divy.appendChild(image);
于 2013-03-28T00:05:08.010 回答