function

Since version 1.7.0, VChart provides the method registerFunction to register expression functions globally and on instances. In principle, registration functions can be applied wherever user-defined callback functions are supported. Supports function registration mechanism, aiming to solve the problem of inability to serialize scene functions such as mini programs and Feishu cards.

registerFunction

registerFunction registers a function method. The registered function is available in the chart via the function name.

/**
 * Register function
 * @param key function name
 * @param fun function content
 * @returns
 */
registerFunction: (key: string, fun: Function) => void;

unregisterFunction

unregisterFunction unregisters the function method. After logging out the function is not available in the chart.

/**
 * Logout function
 * @param key function name
 */
unregisterFunction: (key: string) => void;

getFunction

getFunction This method will get the function based on the function name.

/**
 * Get function
 * @param key function name
 * @returns
 */
getFunction: (key: string) => Function | null;

getFunctionList

getFunctionList This method can obtain a list of all function names.

/**
 * Get function list
 * @returns
 */
getFunctionList: () => string[] | null;