2021年11月3日
[CSS] z-index
摘要： Z-index cannot be added to static position DOM element. All the DOM element by default is static position. So if you have to add z-index, you can add 阅读全文
posted @ 2021-11-03 15:58 Zhentiw 阅读(47) 评论(0) 推荐(0)
[Javascript] Safely Access a Property on a JavaScript Array with Optional Chaining
摘要： let other = null console.log(other?.[0]) // undefined You can use optional chaining to access elements in an array. If the array is null or undefined, 阅读全文
posted @ 2021-11-03 01:05 Zhentiw 阅读(31) 评论(0) 推荐(0)