*** WIP WIP *** load all charts in advance

public/javascripts/showcharts.js

@@ -55,17 +55,15 @@ export async function showChart(params, typ, container) {
         }
     }
 
-
     const url = `/chart/getsensordata?sensorid=${params.sid}&data=${typ}`
     let ret = await fetch(url)
         .catch(e => {
             logerror(e)
         });
     let erg = await ret.json()
-
     erg.options.xAxis.labels.formatter = xformat
     erg.options.tooltip.formatter = form
-    let chr = Highcharts.chart(container, erg.options, function (chart) {
+    let chart = Highcharts.chart(container, erg.options, function (chart) {
         utils.addSensorID2chart(chart, {
             sid: erg.params.sensorid,
             indoor: erg.params.indoor
@@ -79,4 +77,9 @@ export async function showChart(params, typ, container) {
         }
 }
 
-
+export const loadAll = async (params) => {
+    console.log('now load all in Background')
+    for (let i = 2; i < tabtable.length; i++) {
+        await showChart(params, tabtable[i].type, tabtable[i].container)
+    }
+}