JavaScript/jQuery Chart - size
Specifies the UI component's size in pixels.
The Chart's default size is width: 400px; height: 400px. You can specify custom width and height for the component:
- Fixed 
 Assign values to the size object's height and width properties.
- Relative 
 Specify a container for the component. The Chart occupies the container area.
Assign 0 to the size object's height and width properties to hide the Chart component.
jQuery
$(function() {
    $("#chartContainer").dxChart({
        // ...
        size: {
            height: 300,
            width: 600
        }
    });
});Angular
<dx-chart ... >
    <dxo-size
        [height]="300"
        [width]="600">
    </dxo-size>
</dx-chart>
import { Component } from '@angular/core';
@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    // ...
}
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxChartModule } from 'devextreme-angular';
@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxChartModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }Vue
<template>
    <DxChart ... >
        <DxSize
            :height="300"
            :width="600"
        />
    </DxChart>
</template>
<script>
import DxChart, {
    DxSize
} from 'devextreme-vue/chart';
export default {
    components: {
        DxChart,
        DxSize
    },
    // ...
}
</script>React
import React from 'react';
import Chart, {
    Size
} from 'devextreme-react/chart';
class App extends React.Component {
    render() {
        return (
            <Chart ... >
                <Size
                    height={300}
                    width={600}
                />
            </Chart>
        );
    }
}
export default App;Alternatively, you can use CSS to style the UI component's container:
jQuery
$(function() {
    $("#chart").dxChart({
        // ...
    });
});
#chart {
    width: 85%;
    height: 70%;
}Angular
<dx-chart ...
    id="chart">
</dx-chart>
#chart {
    width: 85%;
    height: 70%;
}Vue
<template>
    <DxChart ...
        id="chart">
    </DxChart>
</template>
<script>
import DxChart from 'devextreme-vue/chart';
export default {
    components: {
        DxChart
    },
    // ...
}
</script>
<style>
#chart {
    width: 85%;
    height: 70%;
}
</style>React
import React from 'react';
import Chart from 'devextreme-react/chart';
class App extends React.Component {
    render() {
        return (
            <Chart ...
                id="chart">
            </Chart>
        );
    }
}
export default App;
#chart {
    width: 85%;
    height: 70%;
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