Vue Miscellaneous

• Use filtercan filter the desired data source, for example: < :data = "item.obj.filter( v => (v.parentId==0) )">selected data parentId 0
• When the drop-down box is idrendered according to the value of the drop-down box名称 , you should first bind the id to the value of the drop-down box, and then check the required drop-down list . Otherwise, when the drop-down list is first bound to the drop-down box, it may cause the display to be the id instead id corresponding to the name