How Javascript replaces a specific value in an array

Editor to share with you how Javascript replaces specific values in the array, I believe most people don't know much about it, so share this article for your reference. I hope you can learn a lot after reading this article, so let's learn about it.

Replace a specific value in an array

The splice () method adds / removes items to / from the array, and then returns the deleted items. This method changes the original array. Special attention should be paid to the position of the insertion value!

/ / arrayObject.splice (index,howmany,item1,.,itemX) var plants = ['Saturn',' Uranus', 'Mercury',' Venus', 'Earth',' Mars', 'Jupiter']; var result = plants.splice (2,1,' www.shanzhonglei.com') console.log (plants) / / ['Saturn','Uranus','www.shanzhonglei.com','Mercury','Venus','Earth','Mars','Jupiter'] console.log (result); / / [' Mercury'] above is all the content of the article "how Javascript replaces a specific value in an array". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!