OpenInApp, from instagram

openinapp.js

var exports = //

exports.protocal = 'zhihu://'

exports.applink = 'http://itunes.apple.com/cn/app/id432274380'

/**
 * 尝试在 zhihu iPhone App 中打开链接
 * @param  {string} url
 */
exports.open = function(url) {
  var redirect = false

  if (url.indexOf(exports.protocal) === -1) {
    url = exports.protocal + url
  }
  window.location = url

  window.setTimeout(function() {
    redirect = true
    window.location = exports.applink
  }, 250)

  window.setTimeout(function() {
    if (redirect) {
      window.location.reload()
    }
  }, 500)
}