vue学习(五)基础入门-基础知识(15)-箭头函数

青旅半醒 2023-06-14 15:58 14阅读 0赞

定义函数

![20191120104925725.png][]

![20191120104949861.png][]

![2019112010504253.png][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1eXhpbnU_size_16_color_FFFFFF_t_70][]

![20191120105946931.png][]

![20191120110032195.png][]

![20191120110132842.png][]

这里输出都是window

![20191120110553676.png][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1eXhpbnU_size_16_color_FFFFFF_t_70 1][]

![20191120110759748.png][]

箭头函数没有自己的this，其内部的this绑定到它的外围作用域。对象内部的箭头函数若有this，则指向对象的外围作用域

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1eXhpbnU_size_16_color_FFFFFF_t_70 2][]

[20191120104925725.png]: https://img-blog.csdnimg.cn/20191120104925725.png
[20191120104949861.png]: https://img-blog.csdnimg.cn/20191120104949861.png
[2019112010504253.png]: https://img-blog.csdnimg.cn/2019112010504253.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1eXhpbnU_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/2019112010521654.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1eXhpbnU=,size_16,color_FFFFFF,t_70
[20191120105946931.png]: https://img-blog.csdnimg.cn/20191120105946931.png
[20191120110032195.png]: https://img-blog.csdnimg.cn/20191120110032195.png
[20191120110132842.png]: https://img-blog.csdnimg.cn/20191120110132842.png
[20191120110553676.png]: https://img-blog.csdnimg.cn/20191120110553676.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1eXhpbnU_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191120110618315.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1eXhpbnU=,size_16,color_FFFFFF,t_70
[20191120110759748.png]: https://img-blog.csdnimg.cn/20191120110759748.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1eXhpbnU_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20191120111151121.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1eXhpbnU=,size_16,color_FFFFFF,t_70