onOptionsLoad
Description
在从服务器加载一组选项后立即触发，但在解析它们之前触发
onOptionsLoad: () => void;
Example
gantt.attachEvent("onOptionsLoad", function (){
//在这里编写任何自定义逻辑
});
Details
当调用 updateCollection 或解析带有附加信息的 JSON时，会触发此事件。
Related API
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