var d=window["webpackJsonp"]=window["webpackJsonp"]||[],h=d.push.bind(d)

The code defines a variable `d` that is an array. It then checks if the `window` object already has a property called `webpackJsonp`. If it does, it assigns the existing value to `d`. If not, it sets `d` to an empty array.

The code then defines a function `h` that adds items to the `d` array using the `push()` method.

This code is likely used in the context of a module bundler like Webpack, which uses the `webpackJsonp` property to asynchronously load modules.