Syncfusion Javascript Chart

Implementing Charts in Syncfusion TypeScript & JavaScript

The Syncfusion Chart component provides a comprehensive suite of visualization tools for building interactive, data-driven dashboards. With 15+ chart types, advanced customization options, and real-time data support, you can create professional visualizations for any use case. Works in both TypeScript (with full type safety) and JavaScript (ES5 CDN-based or webpack).

Platform Support

This skill covers both TypeScript and JavaScript implementations:

TypeScript (Primary):

• Full type definitions and IDE support
• Module-based imports with Chart.Inject()
• Webpack/bundler-based setup
• Advanced type checking

JavaScript (ES5):

• CDN-based or local script loading
• Global namespace access (ej.charts.Chart)
• No build step required
• Compatible with ES5 and modern browsers

Where noted, code examples show both TS and JS variants. Choose based on your project setup.

When to Use This Skill

Use this skill when you need to:

• Create basic charts - Line, area, bar, column, pie, or scatter plots
• Visualize complex data - Multiple series, stacked charts, grouped data
• Build dashboards - Combine charts with real-time data updates
• Customize appearance - Colors, fonts, animations, themes
• Add interactivity - Tooltips, legends, selection, zooming, crosshairs
• Implement advanced features - Technical indicators, trendlines, annotations
• Export charts - PNG, SVG, PDF, or print functionality
• Optimize performance - Handle large datasets efficiently
• Support accessibility - WCAG compliance, keyboard navigation, RTL

Navigation Guide

Choose the reference that matches your task:

Getting Started

📄 Read: references/getting-started.md

• Installation and setup
• Basic chart creation with minimal code
• Data binding fundamentals
• Theme selection and initial configuration

Chart Types & Selection

📄 Read: references/chart-types.md

• Overview of 15+ chart types (Line, Area, Bar, Column, Pie, Doughnut, Polar, Radar, Waterfall, Funnel, Stock, etc.)
• When to use each type
• Basic implementation for each chart type
• Series combinations and variations

Series Configuration

📄 Read: references/series-configuration.md

• Configuring series properties and data
• Data labels and marker customization
• Stacking and grouping strategies
• Empty point handling and data gaps

Axes Customization

📄 Read: references/axes-customization.md

• Category, numeric, and datetime axes
• Axis labels, formatting, and ranges
• Multiple axes and panes
• Custom axis positioning and scrolling

Features & Interaction

📄 Read: references/features-interaction.md

• Tooltips, crosshairs, and track balls
• Legend configuration and positioning
• Selection, zooming, and panning
• Annotations, markers, and indicators

Styling & Appearance

📄 Read: references/styling-appearance.md

• Color schemes, gradients, and themes
• Font, border, and background customization
• Chart area and plot area styling
• Responsive design and layout

Advanced Features

📄 Read: references/advanced-features.md

• Technical indicators (SMA, EMA, MACD, RSI, Stochastic, etc.)
• Trendlines and trend analysis
• Export to PNG, SVG, PDF, Print
• Animations and smooth transitions

Data Handling & Updates

📄 Read: references/data-handling.md

• Dynamic data updates and real-time charts
• Data editing and user interaction
• Loading and caching large datasets
• Working with various data sources

Accessibility & RTL

📄 Read: references/accessibility-rtl.md

• WCAG compliance and accessibility standards
• Keyboard navigation
• ARIA labels and screen reader support
• Right-to-left (RTL) language support

API Reference

📄 Read: references/api-reference.md

• Complete Chart API documentation
• All classes, enumerations, and interfaces
• Methods and events reference
• Module injection guide
• Configuration patterns

Troubleshooting & Optimization

📄 Read: references/troubleshooting.md

• Common issues and solutions
• Performance optimization techniques
• Browser compatibility notes
• Debugging strategies

Quick Start Example

TypeScript:

import { Chart, LineSeries, DateTime, Legend, Tooltip, Category } from '@syncfusion/ej2-charts';

// Inject required modules
Chart.Inject(LineSeries, DateTime, Legend, Tooltip, Category);

const data = [
  { month: 'Jan', sales: 21 },
  { month: 'Feb', sales: 24 },
  { month: 'Mar', sales: 36 },
  { month: 'Apr', sales: 38 },
  { month: 'May', sales: 54 }
];

const chart = new Chart({
  primaryXAxis: { valueType: 'Category' },
  title: 'Monthly Sales',
  tooltip: { enable: true },
  legendSettings:{ visible: true },
  series: [{
    dataSource: data,
    xName: 'month',
    yName: 'sales',
    type: 'Line',
    name: 'Sales'
  }]
}, '#chart');

Common Patterns

Pattern 1: Multi-Series Bar Chart

Multiple data series displayed side-by-side for comparison:

series: [
  { dataSource: data, xName: 'month', yName: 'sales', type: 'Column', name: 'Sales' },
  { dataSource: data, xName: 'month', yName: 'revenue', type: 'Column', name: 'Revenue' }
]

Pattern 2: Stacked Column with Legend

Stacked visualization showing composition and trends:

series: [
  { dataSource: data, xName: 'category', yName: 'value1', type: 'StackingColumn' },
  { dataSource: data, xName: 'category', yName: 'value2', type: 'StackingColumn' }
],
legend: { visible: true, position: 'Bottom' }

Pattern 3: Real-Time Data Update

Continuously updating chart with new data points:

// Update with new data
chart.series[0].dataSource = updatedData;
chart.refresh();

Pattern 4: Interactive Selection

Enable user selection with event handling:

pointRender: (args: IPointRenderEventArgs) => {
  // Customize point on selection
},
selectionMode: 'Point'

Key Properties

Chart-level:

• primaryXAxis, primaryYAxis - Configure axes
• series - Define data series
• tooltip - Enable/configure tooltips
• legend - Control legend display
• title - Chart title

Series-level:

• dataSource - Data binding
• xName, yName - Data field mapping
• type - Chart type (Line, Column, Pie, etc.)
• marker - Point customization
• dataLabel - Label display

Customization:

• palette - Color scheme
• theme - Built-in theme
• background - Chart background
• height, width - Dimensions