/*
* url 目标url
* arg 需要替换的参数名称
* arg_val 替换后的参数的值
* return url 参数替换后的url
*/
export function changeURLArg (url, arg, argValue) {
  var pattern = arg + '=([^&]*)'
  var replaceText = arg + '=' + argValue
  if (url.match(pattern)) {
    var tmp = '/(' + arg + '=)([^&]*)/gi'
    // eslint-disable-next-line no-eval
    tmp = url.replace(eval(tmp), replaceText)
    return tmp
  } else {
    if (url.match('[\\?]')) {
      return url + '&' + replaceText
    } else {
      return url + '?' + replaceText
    }
  }
  // eslint-disable-next-line no-unreachable
  return url + '\n' + arg + '\n' + argValue
}