Returns the index of the first matching element.

• Category: JS Array Methods Reference — part of the JavaScript Tutorial on GoCareerGo
• Read the short summary above, then check the linked docs for full syntax/behaviour
• Interview tip: be ready to explain "Array.prototype.findIndex()" in one sentence, then back it up with a tiny example

// Array.prototype.findIndex() — minimal example
console.log("Array.prototype.findIndex()");