4-10哪個(gè)編程練習(xí)怎么做??？，
求大神指教，小弟感激不盡
qq_不想和你玩了_0
2017-11-09
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2017-11-09
<!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">
?var infos = [
? ? ['小A','女',21,'大一'],
['小B','男',23,'大三'],
['小C','男',24,'大四'],
['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']
];
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>
2019-01-08
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']]; var?names?=?new?Array(); for(var?i=0;i<j;i++){ ? names[i]?=?new?Array(); ??????? for(var?j=0;?j<k;?j++){ ??????? ????names[i][j]?=?""; ??????? } ? ?} ? //第一次篩選，找出都是大一的信息 for(var?i=0;i<10;i++){ if(infos[i][3]?==?'大一'){ ????names.push(infos[i]); ? ?}? } //第二次篩選，找出都是女生的信息 for(var?i=0;?i<names.length;?i++){ ???? ???if(names[i][1]?==?'女'){ ?????? ??????document.write(names[i][0]); ????} }2019-01-08
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']]; ???????var?names?=?new?Array(); ???????for(var?i=0;i<j;i++){ ??????? names[i]?=?new?Array(); ??????? for(var?j=0;?j<k;?j++){ ??????? names[i][j]?=?""; ??????? } ???????} ??????//第一次篩選，找出都是大一的信息 for(var?i=0;i<10;i++){ ???if(infos[i][3]?==?'大一'){ ???????names.push(infos[i]); ???}? } ? //第二次篩選，找出都是女生的信息 for(var?i=0;?i<names.length;?i++){ ????if(names[i][1]?==?'女'){ ????????document.write(names[i][0]); ????} }2018-06-07
var tara = [['Image Dragon ','女',21,'大一'],['小B','男',23,'大三'],['小C','男',24,'大四'],['taylor ','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'],['Jay','女',20,'大一'],['小J','男',20,'大三']];
for (t=0;t<tara.length;t++){
if(tara[t][3]=='大一' && tara[t][1]=='女'){
document.write(tara[t][0]);
}
}
2018-03-25
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']];
?for(var i=0;i<infos.length;i++){
? if(infos[i][3]=='大一'&&infos[i][1]=='女'){
? document.write('讀大一并且是女生的有:'+infos[i][0]+'<br>');
? }
?}
2017-11-13
?var infos [
? ? ?{name:'小A',sex:'女',age:'21',cent;"大一"},
? ? ?{name:'小B',sex:'女',age:'21',cent;"大2"},
? ? ?{name:'小C',sex:'女',age:'21',cent;"大一"},
? ? ?{name:'小D',sex:'女',age:'21',cent;"大一"}
? ? ?]
?
?//第一次篩選，找出都是大一的信息
for (var i = 0;i < infos.length;i++){
? ? ?if(infos[i].cent=='大一'){
? ? ?console.log(infos[i])
? ? ?if(infos[i].sex=='女'){
? ? ? ? ?console.log(infos[i].name)
? ? ?}
?}
}