數(shù)組中的排序問題
<script type="text/javascript">
?function sortNum(a,b) {
?return a - b;
//升序，如降序，把“a - b”該成“b - a”
}
var myarr = new Array("80","16","50","6","100","1");
?document.write(myarr + "<br>");
?document.write(myarr.sort(sortNum));
</script>
運行結(jié)果：
80,16,50,6,100,1
1,6,16,50,80,100
不理解這個函數(shù)怎么實現(xiàn)升序的
2016-05-07
sort()是排序的庫函數(shù)，集成好了排序的算法，直接調(diào)用就好