// btoa 只能base64字符串
let json = {
channel: '100000',
i_code: '3',
invite_code: ''
}
let btoaRequets = btoa(JSON.stringify(json));
console.log(btoaRequets) // eyJjaGFubmVsIjoiMTAwMDAwIiwiaV9jb2RlIjoiMyIsImludml0ZV9jb2RlIjoiIn0=
console.log(JSON.parse(atob(btoaRequets)))
console.log(request['i_code'])
// atob解析
let data = JSON.parse(atob(decodeURIComponent(dataUrl).replace('molixg','')));