JavaScript中的关联数组的IndexOf

Question

can someone tell me please how to get index of an associative array??

for example index of key:".launchPad-plankovy"??

        var droppableClasses = [
           {key:".stackDrop-plankovy", value:".card-plankovy"}, 
           {key:".launchPad-plankovy", value:".card-plankovy"}
        ];

Answer 1

With ES6 you can use findIndex() like this.

 var droppableClasses = [{ key: ".stackDrop-plankovy", value: ".card-plankovy" }, { key: ".launchPad-plankovy", value: ".card-plankovy" }]; var index = droppableClasses.findIndex(function(e) { return e.key == '.launchPad-plankovy'; }) console.log(index)