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Xiaobian to share with you how JavaScript uses hasOwnProperty to judge empty, I believe most people still don't know how to understand, so share this article for everyone's reference, I hope you have a lot of harvest after reading this article, let's go to understand it together!

hasOwnProperty null

Use hasOwnProperty Yes Use for loop to judge element If it contains, return false Description is not empty, otherwise it is empty

let forNull = (items) => { for (let item in items) { if(items.hasOwnProperty(item)){ return false } } return true} The above is "JavaScript how to use hasOwnProperty null" all the content of this article, thank you for reading! I believe that everyone has a certain understanding, hope to share the content to help everyone, if you still want to learn more knowledge, welcome to pay attention to the industry information channel!

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