<script>
window.onload = function(){
    
    var arr=["I love JavaScript","Best wish to you","beautiful"];
    
    arr.sort(compare);
    
    alert(arr.toString());
    
    
    };
    
    function compare(str1,str2)    //数组的排序比较函数
    {
        function wordsCount(str)  //对一个字符串中单词数目统计
        {
            var c=0;
            for(var i=0;i<str.length;++i)
            {
                if(str.charAt(i)===" ")
                    c++;
            }
            return c+1;
        }
        
        for(var i=0;i<str1.length;++i)
        {
            var str1Words = wordsCount(str1);
            var str2Words = wordsCount(str2);
            
            return str1Words - str2Words;
        }
        
        
        
    }
    

</script>