highcharts - How to add a class to the element class in EXTJs -


i'm using chart render piechart app. have:

ext.query('.highcharts-container')

that gives me array of highchart-containers , i'd add custom class every 1 of them add custom css. tried:

ext.query('.highcharts-container').addcls("test")

but says "addcls" not function. below img of how looks:

enter image description here , accord answers below, tried adding in seperate app, , works, reason in case constant shows undefined.no clue whts going on?

ext.query return array of matching components. if you're sure there 1 item in array, can use:

ext.componentquery.query('.highcharts-container')[0].addcls("test")

otherwise, should loop through items , add class each component.

ext.componentquery.query('.highcharts-container').foreach(function (item) {     item.addcls("test"); });

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