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Asked: 2026-05-30T13:45:04+00:00

I came across the array notation in JavaScript, and I wondered which way would

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I came across the array notation in JavaScript, and I wondered which way would be faster or better to write. I think the second version is harder to read, but are there any benefits of it ? Or does somebody use this way of calling the methods? Or is there no difference between those regarding their speed?

  • $('#myContainer')['addClass']("active");

  • $('#myContainer').addClass("active");

I am used to doing it the second way, but is the first way faster or are there any other benefits of using the first version?

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1 Answer

  1. Editorial Team

    JSPerf: http://jsperf.com/brackets-vs-dot-notation

    According to the perf, the bracket notation is faster in some browsers.

    This is a kind of micro-optimalisation which you should avoid. Choose the notation which feels the most comfortable.

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