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小程序或者for循序要不要加key?
2022-06-26 02:46:00 【a_靖】
答案肯定是要,如果不加 key 是会影响性能的,因为没有key的话浏览器会重复操作多次渲染,导致影响页面的性能,主要体现在页面加载慢,渲染慢。
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