JS自定义混合Mixin函数示例

本文实例讲述了JS自定义混合Mixin函数。分享给大家供大家参考，具体如下：

<script type="text/javascript">
/* 增加函数 */
function augment(receivingClass, givingClass) {
for(methodName in givingClass.prototype) {
 if(!receivingClass.prototype[methodName]) {
  receivingClass.prototype[methodName] = givingClass.prototype[methodName];
 }
}
}
/* 改进的增加函数 */
function augment(receivingClass, givingClass) {
if(arguments[2]) { // Only give certain methods.
 for(var i = 2, len = arguments.length; i < len; i++) {
  receivingClass.prototype[arguments[i]] = givingClass.prototype[arguments[i]];
 }
}
else { // Give all methods.
 for(methodName in givingClass.prototype) {
  if(!receivingClass.prototype[methodName]) {
   receivingClass.prototype[methodName] = givingClass.prototype[methodName];
  }
 }
}
}
var Author = function Author(name, books) { // 构造函数
this.name = name;
this.books = books || 'default value';
};
Author.prototype = {
getName: function() {
 return this.name;
},
getBooks: function() {
 return this.books;
}
};
var Editor = function Editor() {
};
Editor.prototype = {
hello: function() {
 return 'Hello,'+this.name;
}
};
augment(Author, Editor);
var author = new Author('Ross Harmes', ['JavaScript Design Patterns']);
console.log(author.getName());
console.log(author.getBooks());
console.log(author.hello());
</script>

结果：

经过拼接处理之后，author就获取到了hello方法了，属性还是自己的name。

希望本文所述对大家JavaScript程序设计有所帮助。