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"I'm good at HTML and JavaScript" vs "I'm good on HTML and JavaScript"

The correct phrase is "I'm good at HTML and JavaScript." The preposition 'at' is used to indicate proficiency or skill in a particular subject or activity.

Last Updated: March 15, 2024

I'm good at HTML and JavaScript

This phrase is correct and commonly used in English.

Use 'at' when talking about proficiency or skill in a particular subject or activity. In this case, it indicates that the person is skilled in HTML and JavaScript.

I'm good on HTML and JavaScript

This phrase is not correct in English. The preposition 'on' is not used to indicate proficiency or skill in a subject or activity.

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