我的总结

1.数租去重

<script>
        var arr1 = [1, 2, 2, 2, 3, 3, 3, 4, 5, 6],
            arr2 = [];
        for(var i = 0, len = arr1.length; i < len; i++) {
            if(arr2.indexOf(arr1[i]) < 0) {
                arr2.push(arr1[i]);
            }
        }
        document.write(arr2)
    </script>

2.数组排序

<script>
        var array = [1, 4, -8, -3, 6, 12, 9, 8];
        //排序函数
        function compare(val1, val2) {
            return val1 - val2;
        };
        array.sort(compare);
        document.write(array);
    </script>

3.数组字符串的转换

<script>
        //数组转字符串
        var a, b;
        a = new Array(0, 1, 2, 3, 4);
        b = a.join("-"); //"0-1-2-3-4"
        //字符串转数组
        var s = "abc,abcd,aaa";
        ss = s.split(","); // 在每一个逗号(,)处进行分解  ["abc", "abcd", "aaa"]
        var s1 = "helloworld";
        ss1 = s1.split(''); //["h", "e", "l", "l", "o", "w", "o", "r", "l", "d"]
    </script>

4.浏览器内核

<div>
        <p>IE: trident内核 </p>
        <p>Firefox：gecko内核 </p>
        <p>Safari：webkit内核 </p>
        <p>Opera：之前是presto内核，Opera现已改用Google Chrome的Blink内核 </p>
        <p>Chrome：Blink(基于webkit，Google与Opera Software共同开发)</p>
    </div>

5.获取当前日期

今天是：
    <script type="text/javascript">
        var d, s = "";
        var x = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");
        d = new Date();
        s += d.getFullYear() + "年" + (d.getMonth() + 1) + "月" + d.getDate() + "日　";
        s += x[d.getDay()];
        document.writeln(s);
    </script>