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4-10的編程題怎么做 求解
不將就70
2016-12-31
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4-10的編程題怎么做 求解
2016-12-31
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2017-01-06
<!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(gè)數(shù)組的形式,定義變量為 infos
?var infos=[
????????????['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,'大二'],
????????????['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
?//第二次篩選，找出都是女生的信息
?for(var i=0;i<infos.length;i++)
? {
????if(infos[i][3]=='大一' && infos[i][1]=='女')
????? {
????????????document.write(infos[i][0]+'<br>')
}
}
</script>
</head>
<body>
</body>
</html>
2017-01-06
<!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(gè)數(shù)組的形式,定義變量為 infos
?var infos=[
????????????['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,'大二'],
????????????['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
?//第二次篩選，找出都是女生的信息
?for(var i=0;i<infos.length;i++)
? {
????if(infos[i][3]=='大一' && infos[i][1])
????? {
????????????document.write(infos[i][0]+'<br>')
}
}
</script>
</head>
<body>
</body>
</html>
?
2016-12-31
<!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(gè)數(shù)組的形式,定義變量為?infos ?var?infos=[["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 ?var?freshmen?=?new?Array(); ?var?j?=?0; ?for?(var?i?=?0;?i?<?infos.length;?i?++){ ????if?(infos[i][3]?==?"大一"){ ????????freshmen[j++]?=?infos[i]; ????} ?} //??document.write(freshmen.length); ?//第二次篩選，找出都是女生的信息 ?for?(var?i?=?0;?i?<?j;?i?++){ ?????if?(freshmen[i][1]?==?'女'){ ?????????document.write(freshmen[i][0]?+?"<br/>"); ?????} ?} ? ?? </script> </head> <body> </body> </html>