如何使用lodash从数组中删除对象？

Question

I have a variable that looks something like this

[ { url : "http:image.gif"}, { url : "http:image.gif"} , { url : "http:image.gif"}]

I would like a function that goes through and removes one object each time the function is called until there are no more items left.

something like

function Decrement(){

    if array is not empty

        var lastKey = _.last (object);  

        var updatedObject = _.without ( object, lastkey); 

        return the last key of the new updatedObject

} 

Answer 1

You could use a combination of JavaScript's pop and lodash's _.last :

function decrement(array) {
  array.pop();
  return _.last(array);
}

 var a = [1, 2, 3]; function decrement(array) { array.pop(); return _.last(array); } var result = decrement(a); console.log(result, a); 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.15.0/lodash.min.js"></script>