Jones, making his second career appearance after logging a 3-2 shootout win over Anaheim Tuesday in his NHL debut, made his best stop in the second period on a point-blank shot by Thomas Vanek.
Anze Kopitar and Dustin Brown each scored and Tyler Toffoli added an empty-netter as the Kings improved to 10-1-4 in their last 15 games.
Kevin Poulin stopped 21-of-23 shots for the Islanders, who dropped a ninth straight.
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