<!DOCTYPE??HTML>
<html?>
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
<title>流程控制語句</title>
<script?type="text/javascript">
?//第一步把之前的數(shù)據(jù)寫成一個數(shù)組的形式,定義變量為?infos
?var?arr1=[];
?var?j=0;
?var?arr[]=[
?????['小A','女',21,'大一'],
?????['小B','男',23,'大三'],
?????['小C','男',24,'大四'],
?????['小D','女',21,'大一'],
?????['小E','女',22,'大四'],
?????['小F','男',21,'大一'],
?????['小G','女',22,'大二'],
?????['小H','女',20,'大三'],
?????['小I','女',20,'大一'],
?????['小J','男',20,'大三']
????];
??//第一次篩選，找出都是大一的信息
?for(var?i=0;?i<arr.length;?i++){
?????if(arr[i][3]=='大一'){
????????arr1[j]=arr[i];?
????????j++;
?????}????
?}?
?//第二次篩選，找出都是女生的信息
?for(var?i=0;?i<arr1.length;?i++){
?????if(arr1[i][1]=="女")
?????document.write(arr1[i][0]+"<br/>");
?}?
</script>
</head>
<body>
</body>
</html>
2016-08-06
聲明arr時，數(shù)組命名不符合規(guī)范
var?arr=[
?????['小A','女',21,'大一'],
?????['小B','男',23,'大三'],
?????['小C','男',24,'大四'],
?????['小D','女',21,'大一'],
?????['小E','女',22,'大四'],
?????['小F','男',21,'大一'],
?????['小G','女',22,'大二'],
?????['小H','女',20,'大三'],
?????['小I','女',20,'大一'],
?????['小J','男',20,'大三']
????];
2016-08-07
是不是 類C 語言 學(xué)多了？ ?手動滑稽！
2016-08-06
數(shù)組定義。var arr=[...]，不是var?arr[]=[...]