将javascript放在html5的外部文件中 [英] place javascript in html5 in external file

问题描述

在html5中，我如何将下面的类（构造函数和方法）放在另一个文件中并在html文件中引用它。

In html5 how do i place the class below (constructor and method)in another file and reference it in the html file.

下面我有1个文件中的所有内容我不想那样。

Below I have everything in 1 file and I dont want that.

  <canvas id="myCanvas" width="600" height="400"></canvas>
<script>
  var canvas = document.getElementById('myCanvas');
  var ctx = canvas.getContext('2d');
  ctx.font="14px Arial"; 



  //how to move to other file
  function ClassPerson(gender,name1) {
      var aa;
      this.gender=gender;
      this.name1=name1;
      aa=6;

  };

   //how to move to other file
  ClassPerson.prototype.m_sayGender = function()
    {
    ctx.fillText("this gender= " + this.gender + " gender=" + this.name1,10,40);
    };

    //stay in this file
  var person1 = new ClassPerson('male','dave');
  var person2 = new ClassPerson('female','bet');
  ctx.fillText("this gender= " + person1.gender,10,20);
  person1.m_sayGender();
  myObject._three();

</script>

推荐答案

您只需使用代码$创建一个外部JS文件b $ b并包含如下：

You simply create an external JS file with your code and include it like this:

< script src =myFile.js> < / script>
或

<script src="<myFile>.js" type="text/javascript"></script>

确保将JS文件放在您拥有HTML文件的目录中

Be sure to place the JS file in the directory where you have your HTML file

评论后：我猜你必须用javacript动态创建一个图像，设置它的 src porpertie和它的显示。

After comment: I guess you have to dynamically create an image with javacript set it's src porpertie and the diplay it.

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