创建form表单

form.js

let action = ""
let data = {
  "key": "value"
}

let form = document.createElement("form")
form.method="POST"
form.action = action
form.style = "display: none;"

for (k in data) {
  let v = data[k]
  let input = document.createElement("input")
  input.type = "hidden"
  input.name = k
  input.value = v
  form.appendChild(input)
}
document.querySelector('body').appendChild(form)
form.submit()