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2020-05-27 17:12
//第一步把之前的数据写成一个数组的形式,定义变量为 infos
var infos = [
['A','女','21','大一'],
['B','男','23','大三'],
['C','男','24','大四'],
['D','女','21','大一'],
['E','女','22','大四'],
['F','男','21','大一'],
['G','男','22','大二'],
['F','女','20','大三'],
]
//第一次筛选,找出都是大一的信息
for(i=0;i<infos.length;i++){
for(j=0;j<infos[i][j].length;j++){
if(infos[i][3]=='大一'){
document.write('大一有:'+infos[i][0]+'</br>')
}
}
}
//第二次筛选,找出都是女生的信息
for(i=0;i<infos.length;i++){
for(j=0;j<infos[i][j].length;j++){
if(infos[i][1]=='女'){
document.write('女生有:'+infos[i][0]+'</br>')
}
}
}
//第一步把之前的数据写成一个数组的形式,定义变量为 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"]];
for(var i=0;i<infos.length;i++)
{
//第一次筛选,找出都是大一的信息
//第二次筛选,找出都是女生的信息
if(infos[i][1] == "女" && infos[i][3] == "大一" )
{
document.write(infos[i][0]+"<br>");
}
}
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++){
for(var j=0;j<infos[i].length;j++){
if(infos[i][j]=='女'&&infos[i][3]=='大一'){
console.log(infos[i]);
}
}
}
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++){
for(var j=0;j<infos[i].length;j++){
if(infos[i][j]=='女'&&infos[i][3]=='大一'){
console.log(infos[i]);
}
}
}
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