Tutorial: Build a Real-Time Word and Character Counter Using Vanilla JavaScript

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A tutorial published on DEV Community walks developers through building a real-time word and character counter using HTML, CSS, and vanilla JavaScript, with no external libraries required. The tool tracks word count, total characters, and characters without spaces, updating instantly as users type, paste, or delete text. The implementation uses JavaScript's input event listener, the trim() and split() methods with a regex pattern, and the length property for character counting. The guide also flags a key limitation: JavaScript measures string length in UTF-16 code units, meaning certain emoji and Unicode characters may be counted as more than one character. The author suggests extending the project with features like a reading-time estimator, sentence counting, and a character limit indicator to deepen understanding of DOM manipulation and string processing.

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ProgrammingDEV Community ·

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