[vmasto]

A browser and an editor is far from enough for web development. At the very minimum you will need node.js at the very least for task managment and build process, all the browsers and VMs to load IE and Edge testing plus maybe Photoshop, or at least some kind of industry acceptable image/design software.

[snehesht]

Yeah definitely, but it's not really necessary to run them on your laptop. You could simply vnc into a remote machine to use tools like photoshop etc. As for nodejs or any other building tools they don't affect your choice of laptop.

If you need performance then you may have to sacrifice battery and weight. if you need something you can carry around you have to give up performance as your primary choice.