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Daily Archives: February 9, 2011

the pleasures and perils of JavaScript’s promiscuous comparison operator

by Rob Friesel

Spoiler alert: toString has its mitts in everything. This all started when we saw a candidate put the following into an exercise we had given him: if (arrayToTest == ”) Our first thought was well that seems wrong… And though it seems like something that shouldn’t work, it did–when the array contained a single item, […]