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function f(typeid,key) { //函数名
var AA = {
"a":{
"qwe":"111" ,
"er":"www"
},
"b":{
"qwwe":"qqq" ,
"err":"www"
}
};
alert(AA[typeid][key]); //你写的括号是全角的!!
}
f('a','er');
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
</head>
<body>
<script>
var AA = {
"a": {
"qwe": "111",
"er": "www"
},
"b": {
"qwwe": "qqq",
"err": "www"
}
};
var i = 'b';
var j = 'qwwe';
alert(AA[i][j]);
</script>
</body>
</html>
var AA = {
"a":{
"qwe":"111" ,
"er":"www"
},
"b":{
"qwwe":"qqq" ,
"err":"www"
}
};
//是这意思吗?
var a = 'b';
var qwwe = 'err';
alert(AA[a][qwwe]); //www