angular 动态设置width怎么写

Question

      <div echarts [options]="options[item.index-1]" [loading]="showloading" class="chart" (chartInit)="resetOptions(tabIndex,time)"[ngStyle]="width:canvasWidth;height:400px" style="height: 400px" [style.width.px]="canvasWidth"></div>

这个么写不对啊
canvasWidth是动态的宽度

Answer 1

[ngStyle]="{width: canvasWidth}"