In addition to Weibo, there is also WeChat
Please pay attention
WeChat public account
Shulou
2025-04-03 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >
Share
Shulou(Shulou.com)06/03 Report--
This article mainly talks about "what are the differences between shift and unshift in js". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn "what are the differences between shift and unshift in js?"
1. Add unshift can accept = = add multiple items, but delete only one item by shift.
Arrays shift and unshfit provide a similar method of queue operation (First-In-First-Out first-in, first-out), adding or removing from the header.
2. Shift and unshfit will modify the original array, shift will return the item = = delete = =, and unshift will return the length of the array after = = add = =.
Example
/ / unshift is to add all var colors = new Array () to the header; / / create an array var count = colors.unshift ('red',' green'); / / ['red',' green'] so far, I believe you have a deeper understanding of "what is the difference between shift and unshift in js". You might as well do it in practice! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!
Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.
Views: 0
*The comments in the above article only represent the author's personal views and do not represent the views and positions of this website. If you have more insights, please feel free to contribute and share.
Continue with the installation of the previous hadoop.First, install zookooper1. Decompress zookoope
"Every 5-10 years, there's a rare product, a really special, very unusual product that's the most un
© 2024 shulou.com SLNews company. All rights reserved.