求解答求幫忙
為什么這么定義就輸出不了呢，var infos=new Array[['小A','女',21,'大一'], ['小B','男',23,'大三'], ['小C','男',24,'大四'],]. 這樣定義有什么錯(cuò)誤的嗎？
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2015-10-09
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2015-10-10
var infos=new Array(['小A','女',21,'大一'], ['小B','男',23,'大三'], ['小C','男',24,'大四']) ?這樣寫 ?沒(méi)有你那種寫法吧
寫法：[1]
? ? ? ? ? var infos=new Array(1,2,3)
? ? ? ? ?[2] ? ? ? ??
? ? ? ? ?var infos=[1,2,3]
? ? ? ? [3] ? ? ? ??
? ? ? ? ?var infos=new Array()
? ? ? ? ?infos[0]=1;
? ? ? ? ?infos[1]=2;
? ? ? ? ?infos[1]=3;
? ??
2015-10-15
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"]]; ? ?//雙引號(hào)，雙引號(hào)，雙引號(hào)，誰(shuí)說(shuō)不能這樣寫的
?//第一次篩選，找出都是大一的信息
?document.write("大一的有");
?for(i=0;i<infos.length;i++){?
? ? ? ?if(infos[i][3]=="大一"){?
?document.write(infos[i][0]+"、");
? ? ? ?} }
? ? ? ?
?//第二次篩選，找出都是女生的信息
?document.write("<br/><br/>"+"女生有"); ? ? ?
?for(i=0;i<infos.length;i++){ ?
?if(infos[i][1]=="女"){??
?document.write(infos[i][0]+"、");
? ? ? ?}?
}
2015-10-13
var infos=new Array[['小A','女',21,'大一'], ['小B','男',23,'大三'], ['小C','男',24,'大四']]