js数组的排序

<span style="font-size:18px"><script LANGUAGE=javascript>
var arr=[112,6,3,77,33,11,4];
arr.sort(function(a,b){return a-b});          
alert(arr.toString());//3,4,6,11,33,77,112
</script></span>

<span style="font-size:18px"><script LANGUAGE=javascript>
var aa=[];
aa[0]=["4","aa1"];
aa[1]=["3","aa2"];
aa[2]=["1","aa3"];
aa[3]=["2","aa4"];
aa.sort(function(a,b){return a[0]-b[0]});
alert(aa.toString());  //1,aa3,2,aa4,3,aa2,4,aa1
</script></span>

<span style="font-size:18px"><script LANGUAGE=javascript>
// str 一维数组的排序
// type 参数
// 0 字母顺序（默认）
// 1 大小 比较适合数字数组排序
// 2 拼音 适合中文数组
// 3 乱序 有些时候要故意打乱顺序，呵呵
// 4 时间 
var arr=[112,6,3,77,33,11,4];
 function SortBy(type,str)
{
switch (type)
{
case 0:str.sort(); break;
case 1:str.sort(function(a,b){ return a-b; }); break;
case 2:str.sort(function(a,b){ return a.localeCompare(b) }); break;
case 3:str.sort(function(){ return Math.random()>0.5?-1:1; }); break;
case 4:str.sort(function(a,b){return parseInt(a[0].replace(/\-/g,""),10)-parseInt(b[0].replace(/\-/g,""),10)}); break;
default:str.sort();
}
return str;
}
alert(SortBy(1,arr));  //3,4,6,11,33,77,112
</script></span>