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docs: update loop.md

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刘菊萍(絮黎) 2023-09-08 10:56:44 +08:00 committed by 林熠
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docs/docs/demoUsage/appendix/loop.md
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@ -15,3 +15,14 @@ sidebar_position: 0
![image.png](https://img.alicdn.com/imgextra/i4/O1CN01XQfnYL1P4wxn01oXv_!!6000000001788-2-tps-3840-1896.png) ![image.png](https://img.alicdn.com/imgextra/i4/O1CN01XQfnYL1P4wxn01oXv_!!6000000001788-2-tps-3840-1896.png)
this.index 是当前循环的索引值。 this.index 是当前循环的索引值。
3.在事件绑定函数中使用
在事件绑定函数中使用扩展参数设置
![image](https://github.com/alibaba/lowcode-engine/assets/11935995/7274506e-decd-497a-b07f-c95941a706b4)
绑定之后在函数中使用
![image](https://github.com/alibaba/lowcode-engine/assets/11935995/9d52ee5c-9959-4991-91be-9391e639bb7e)
按钮点击效果
![image](https://github.com/alibaba/lowcode-engine/assets/11935995/6ca590c9-1f5f-4d48-94a5-439130a22e92)