[Javascript] 陣列命名及運用

[Javascript] 陣列命名及運用

用法:

//命名陣列及指定陣列值

array_1={no:"商品編號",product:"商品名稱",number:"商品庫存"};

alert(array_1.length); //跳出視窗說 "3"
alert(array_1['no']); //跳出視窗說 "商品編號"
alert(array_1['product']); //跳出視窗說 "商品名稱"
alert(array_1['number']); //跳出視窗說 "商品庫存"

//命名陣列且坎入陣列

array_2={book:["雜誌","漫畫"],music_cd:["流行歌曲","古典音樂","經典老歌"],dvd:["動作片","文藝片","喜劇片","警匪片"]};

alert(array_2.length); //跳出視窗說 "3"
alert(array_2['book'].length); //跳出視窗說 "2"
alert(array_2['music_cd'].length); //跳出視窗說 "3"
alert(array_2['dvd'].length); //跳出視窗說 "4"

續例:

function showvalue(arrayobj){
x=0;
y=arrayobj.length;
while(x < y){
alert(y[x]);
x++;
}
}

showvalue(array_2['book']);
showvalue(array_2['music_cd']);
showvalue(array_2['dvd']);