【JavaScript】連想配列の要素を削除

var hash = {'key1' : 'val1', 'key2' : 'val2', 'key3' : 'val3'};

1	var hash = {'key1' : 'val1', 'key2' : 'val2', 'key3' : 'val3'};

この連想配列の要素「key2」を削除する

delete hash['key2'];

1	delete hash['key2'];