為什么不能輸出結果？
var infos=new Array(); ? for(var i=0;i<10;i++){ ? ? ?infos[i]=new Array(); ? ? for(var j=0;j<4;j++){ ? ? ?infos[i][j]=[
? ? ?["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(infos[i][3]="大一")
?{
? ? ?for(infos[i][1]="女")
? ? ?{
? ? ? ? ?document.write(infos[i][0]+"<br/>")
? ? ?}
?}
2017-03-11
賦值內容錯誤
2017-02-17
你這for循環寫的可不對啊，看下for的語法吧~
2017-02-12
最好還是先賦值，然后再循環判斷吧，這樣關系不是太亂了嗎。很難看清楚錯那的，你像這樣
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(i=0;i<=4;i++){
? ? ?if(infos[i][3]=="大一"&&infos[i][1]=="女"){
? ? ? ? ?document.write(infos[i][0]);
? ? ?}
?}
試試呢