Stage.width = 1000 不能设置

[Shanxian]

上代码 let canvas: any = document.getElementById('learn-canvas'); this.stage = new JTopo.Stage(canvas); this.stage.width = 1000; this.stage.height = 200;

错误信息： ProductListComponent.html:3 ERROR TypeError: Cannot set property width of [object Object] which has only a getter at JTopoComponent.push../src/app/jTopo/jTopo.component.ts.JTopoComponent.ngOnInit (jTopo.component.ts:26) at checkAndUpdateDirectiveInline (core.js:21764) at checkAndUpdateNodeInline (core.js:29983) at checkAndUpdateNode (core.js:29945) at debugCheckAndUpdateNode (core.js:30579) at debugCheckDirectivesFn (core.js:30539) at Object.eval [as updateDirectives] (ProductListComponent.html:30) at Object.debugUpdateDirectives [as updateDirectives] (core.js:30531) at checkAndUpdateView (core.js:29927) at callViewAction (core.js:30168) 希望有人能帮忙解答一下