Http #snippet

Http.md

Http

getHeader

获取头字段 大小写不敏感

const getHeader = (header, field) => {
  if (!header) {
    return ''
  }

  const name = Object.keys(header).find(f => compareStrings(f, field, true))
  return header[name] || ''
}

Demo:

var header = {
  'Content-Type': 'application/json',
  'x-requested-with': 'XMLHttpRequest'  
}

getHeader(header, 'content-type') // 'application/json'

isAjax

判断是否是异步请求

const isAjax = (header) => {
  return getHeader(header, 'x-requested-with') === 'XMLHttpRequest'
}

Demo:

var header = {
  'Content-Type': 'application/json',
  'x-requested-with': 'XMLHttpRequest'  
}

isAjax(header) // true