json十六进制被转换为字符串

var cmd = ["0x02,0x03,0xB4,0xB4,0x00,0x06","0x00,0x02,0x6E,0x00,0x00,0x05","0x01,0x01,0x00,0x78,0x00,0x05","0x03,0x03,0x82,0x96,0x00,0x05"];

var cmd1=[0x02, 0x03, 0xB4, 0xB4, 0xFF, 0xFF,0x02, 0x03, 0xB4, 0xB4, 0x00, 0x06,0x00, 0x02, 0x6E, 0x00, 0x00, 0x05,0x01, 0x01, 0x00, 0x78, 0x00, 0x05,0x03, 0x03, 0x82, 0x96, 0x00, 0x05];

var test =["0x02,0x03,0xB4,0xB4,0x00,0x06","0x00,0x02,0x6E,0x00,0x00,0x05","0x01,0x01,0x00,0x78,0x00,0x05","0x03,0x03,0x82,0x96,0x00,0x05"];

var cloud = [0x02, 0x03, 0xB4, 0xB4, 0xFF, 0xFF,
    0x02, 0x03, 0xB4, 0xB4, 0x00, 0x06,
    0x00, 0x02, 0x6E, 0x00, 0x00, 0x05,
    0x01, 0x01, 0x00, 0x78, 0x00, 0x05,
    0x03, 0x03, 0x82, 0x96, 0x00, 0x05
];

代码如上

cmd 是通过PHP 转换得到的16进制编码但是JS 取到的时候已经变成了字符串
想实现将cmd 变成跟cmd1 一样的十六进制 截图蓝色部分为想要的效果 红色是数据内容