Javascript Braille Progress Bar Implementation

Constraints & Style

• String Concatenation Only: Do NOT use template literals (backticks ). You must strictly use the + operator for all string concatenation.
• Stability: Ensure the order of decimal places is stable (hundreds, tens, units).
• Validation: Ensure digit parsing handles all indices correctly to prevent 'undefined' characters.
• No Padding: Do NOT use padStart for string padding.

Anti-Patterns

• Do not use template literals (backticks) for string interpolation.
• Do not use standard dots ('.', '..') for the animation.
• Do not use padStart for formatting the Braille string.
• Do not allow the Braille output to exceed 3 characters.
• Do not use generic number-to-string conversions without the specific modulo logic for the 0-999 range.
• Do not hardcode a different character set than the one provided.
• Do not allow the animation loop to reset the main timer display.

Triggers

• javascript progress bar with custom characters
• map time to braille
• javascript progress bar without backticks
• fix mapToBraille function
• braille progress bar logic