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¡¡¡¡length Ñ¡ÏîÁбíÖеÄÑ¡ÏîÊý(<OPTIONS>)
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1. var array = new Array(12,23......);//´´½¨Êý×飬³õʼ»¯Êý×éֵΪ£º12£¬13....
2. var array = new Array(12);//´´½¨Êý×飬Êý×é´óСΪ12
3. var array = new Array();//´´½¨Êý×é
 for (var i = 0; i < length; i++) {
         aCity[i] = new Array();//´´½¨¶þάÊý×é
     }
 for (var i = 0; i < length; i++) {
  for (var j = 0; j < length; j++) {
          aCity[i][j] = "";//¸ø¶þάÊý×鸳ֵ
          aCity[i][j] = "";  
  }
     }
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//¶¨ÒåÒ»¸ö¶þάÊý×éaArray,ÓÃÓÚ´æ·Å³ÇÊÐÃû³Æ¡£
var aCity=new Array();
aCity[0]=new Array();
aCity[1]=new Array();
aCity[2]=new Array();
aCity[3]=new Array();
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aCity[0][0]="--ÇëÑ¡Ôñ--";
aCity[1][0]="--ÇëÑ¡Ôñ--";
aCity[1][1]="¹ãÖÝÊÐ";
aCity[1][2]="ÉîÛÚÊÐ";
aCity[1][3]="Ö麣ÊÐ";
aCity[1][4]="ÉÇÍ·ÊÐ";
aCity[1][5]="·ðɽÊÐ";
aCity[2][0]="--ÇëÑ¡Ôñ--";
aCity[2][1]="³¤É³ÊÐ";
aCity[2][2]="ÖêÖÝÊÐ";
aCity[2][3]="ÏæÌ¶ÊÐ";
aCity[3][0]="--ÇëÑ¡Ôñ--";
aCity[3][1]="º¼ÖÝÊÐ";
aCity[3][2]="ËÕÖÝÊÐ";
aCity[3][3]="ÎÂÖÝÊÐ";
function ChangeCity()
{
var i,iProvinceIndex;
iProvinceIndex=document


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