How JavaScript uses the instanceof operator

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Use the instanceof operator

The instanceof operator checks whether the constructor is found in the prototype chain of the object.

Like the typeof operator, it returns a Boolean value. To determine whether a variable is an array, you can use instanceof, as follows:

Let result = {subject: "Science", marks: 97}; let numbers = [1,2,3,4,5]; let name = "Mark"; let names = new Array ("Xiao Zhi", "Xiao Li", "Xiao Wu"); console.log (result instanceof Array); / / falseconsole.log (numbers instanceof Array); / / trueconsole.log (name instanceof Array); / / falseconsole.log (names instanceof Array) / / true above is all the content of the article "how JavaScript uses the instanceof operator". 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!