Javascript Comma Operator

I had quite frankly never heard of this operator before and ran into it while debugging an app. Basically I had an if statement as such:

if(false,”foo”){}

which would to my surprise evaluate to true and not give me a syntax error which I was expecting given the “misplaced” comma.
A little bit of feedback from my colleagues and Google-Fu and I was enlightened: The Javascript Comma Operator:
“You can use the comma operator when you want to include multiple expressions in a location that requires a single expression. The most common usage of this operator is to supply multiple parameters in a for loop.”
You learn a little bit everyday.

Published by Abou Kone

I am a front end architect with 10+ years of experience in web development. The best part of the process for me is converting ideas into code and solving the technical problems that come along. Alongside providing technical leadership and architectural support to projects spanning multiple industries, I am also experienced in leading discussions with designers, developers, and business stakeholders helping to guide teams in turning complex business workflows or data into easy-to-use web and mobile interfaces. I believe in delivering high quality products and am constantly looking into improving the process and tools use to achieve this goal.

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