学习javascript

下面的代码实现了javascript文件的引用:

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <script src="JavaScript1.js" type="text/javascript"></script>
    <script type="text/javascript" >
        alert(new Date().toLocaleDateString());
    </script>
</head>
<body>

</body>
</html>

另外,在超链接的点击里可以执行javascript:

<a href="javascript:alert('hahaha')">js事件</a>,当点击浏览器的 js事件 超链接时,弹框 hahaha

下面的代码实现了f1函数的调用,alert语句必须被包在script标签内。

 <script type="text/javascript">
        f1 = function add(i1, i2) {
            return i1 + i2;
        }
        alert(f1(1,2));
    </script>

javascript也有面向对象的用法:

<script type="text/javascript">
        function person(name, age) {
            this.Name = name;
            this.Age = age;
            this.say=function(){alert(this.Name+this.Age+"hello");}
        }
        new person("tom", "12").say();
    </script>

可以像下面new个数组指向maximum函数,调用函数内的语句:

<script type="text/javascript">
        function maximum(arr) {
            var max = arr[0];
            for (var i = 0; i < arr.length; i++) {
                if (arr[i + 1] > max) {
                    max = arr[i + 1];
                }
            }
            return max;
        }
        var arr1 = new Array();
        arr1[0] = 1;
        arr1[1] = 2;
        arr1[2] = 3;
        alert(maximum(arr1));
    </script>

posted on 2013-01-27 12:58  蔡嘉  阅读(264)  评论(0编辑  收藏  举报

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