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How to comment out code in JavaScript

JS Basicscomments, js basics, multiline, single-line

Build-time DEBUG constant: build tools replace DEBUG true/false so optimizer removes dead branches. Use if(false) for local drops. Replace debugHook with a no-op for hot paths. Use integer bitmask FLAGS (e.g. RENDER) for cheap runtime checks.

JS Basics

How to write multiline code in JavaScript

JS Basicsformatting, js basics, multiline, semicolons

Template literals in JavaScript enhance coding style by allowing embedded expressions for calculations and functions within strings. They improve code conciseness, readability, and performance while enabling conditional logic and tagged templates for customized processing. Considerations regarding performance in complex scenarios should be evaluated.