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Home/ Questions/Q 641193
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Editorial Team
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Editorial Team
Asked: May 13, 20262026-05-13T21:02:09+00:00 2026-05-13T21:02:09+00:00

I could do it with regex (something like myString.match(/^[A-Za-z0-9]$/) ) but it seems like

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I could do it with regex (something like myString.match(/^[A-Za-z0-9]$/)) but it seems like an overkill.

What would be more effective performance-wise?

Thanks.

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  1. Editorial Team
    Editorial Team
    2026-05-13T21:02:10+00:00Added an answer on May 13, 2026 at 9:02 pm

    Use the length property and the charCodeAt( 0 ) function to check the range of the ASCII value…

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