Don't try to use JQuery until it's loaded

watson · Dec 22, 2017 · 055abf7 · 055abf7
1 parent 36ed591
commit 055abf7
Showing 1 changed file with 14 additions and 4 deletions.
diff --git a/assets/client.js b/assets/client.js
@@ -37,10 +37,15 @@ function initMap () {
  : new google.maps.LatLng(48.9062802, 2.3598659) // eslint-disable-line no-undef
  })
 
- setInterval(function () {
- // eslint-disable-next-line no-undef
- $.getJSON({url: 'aircrafts', type: 'GET', success: plotAircrafts})
- }, 2000)
+ onJQuery(function () {
+ setInterval(function () {
+ // eslint-disable-next-line no-undef
+ $.getJSON('aircrafts', plotAircrafts)
+ .fail(function (jqXHR, textStatus, err) {
+ throw err
+ })
+ }, 2000)
+ })
 }
 
 function plotAircrafts (aircrafts) {
@@ -91,6 +96,11 @@ function aircrafts () {
  })
 }
 
+function onJQuery (cb) {
+ if (window.jQuery) cb()
+ else setTimeout(onJQuery.bind(null, cb), 50)
+}
+
 function Aircraft () {
  this.flightPathCoords = []
  // eslint-disable-next-line no-undef