如何修改sencha图表中轴文本的字体颜色和字体大小

Question

please help on this, how to change the font colour and font size in sencha chart for axes text

here my sample chart

http://jsfiddle.net/onlinesolution/djaydxnd/58/

 axes: [
   {
            type: 'Numeric',
            position: 'bottom',
            fields: ['data1'],
            minimum: 0,
            maximum:20,
            fontSize:20
        }, {
            type: 'Category',
            position: 'top',
            fields: ['month'],
        }
],

Answer 1

You need to define a custom theme for this chart:

Ext.define('Ext.chart.theme.StackOverflow', {
    extend: 'Ext.chart.theme.Green',

    constructor: function(config) {
        this.callParent([Ext.apply({
            axisLabelBottom: {
                font: '22px Arial'
            }
        }, config)]);
    }
});

Later on you can use this theme in your chart configuration:

Ext.create('Ext.chart.Chart', {
    theme: 'StackOverflow'
    //[...] 
}

Here is a full example:
http://jsfiddle.net/L4x72q3j/

Here are some older but still valid details on this: http://docs.sencha.com/extjs/4.1.3/#!/guide/drawing_and_charting-section-theming
and here the same based on newer ExtJs versions: http://docs.sencha.com/extjs/6.5.0/classic/Ext.chart.theme.Base.html#cfg-axis

Answer 2

Use label config for ExtJS 6.5.2.

axes: [{
  ...
  label: {
    font: '10px Open Sans'
  }
}]

ExtJS docs: https://docs.sencha.com/extjs/6.5.2/classic/Ext.chart.axis.Axis.html#cfg-label