Problem

Problem

静态节点优化会在闭包中创建一个 hoisted${num} 的变量，之后渲染时，会将 hoisted.el 设置为dom。假如此组件中有事件监听，则会造成实例无法回收，从而造成内存泄漏。

Static hoist will creates a hoisted variable in the closure, and later sets dom to hoisted.el when rendering. If there are event listeners in the component, the component instance cannot be recycled, resulting in a memory leak.

Object reference chain:

• hoisted
• hoisted.el
• hoisted.el.parentElement
• hoisted.el.parentElement.children
• children.onClick
• createInvoker
• instance

Step

• Open dist/index.html
• Click click button three times.
• Open memory panel in chrome devtools, then take heap snapshot, then search BigData。