浏览器Fetch API演进史

特性	Chrome	Firefox	Safari	Edge
fetch Response Request Headers	42	39	10.1	14
headers[Symbol.iterator] headers.entries headers.keys headers.values	42	44	10.1	16
Response.error	43	39	10.1	16
ReadableStream response.body	43	65	11.1	14
request.formData response.formData	60	39	14.1	79
signal	66	57	11.1	16
默认携带 Cookies	68	61	12	?
headers.getSetCookie	113	113	17	113
response.body.getReader({ mode: 'byob' })	116	102	26.4	116
response.bytes	132	128	18	132