Truncate Text

truncateText.js

export const truncateText = (text, characterLimit, addEllipsis = true) => {
    if (text.length <= characterLimit) {
        return text
    } else {
        const specialChars = ['.',',','!','?','-','—',' ']
        let truncatedText = text.substring(0, characterLimit)

        if (addEllipsis) {
            const lastTruncatedChar = () => truncatedText.charAt(truncatedText.length - 1)
            const hasSpecialLastChar = () => specialChars.includes(lastTruncatedChar())
            // trim off last word to prevent word splitting
            truncatedText = truncatedText.substring(0, Math.min(truncatedText.length, truncatedText.lastIndexOf(' ')))
            // trim off special characters if there are any
            while (hasSpecialLastChar()) {       
                truncatedText = truncatedText.substring(0, truncatedText.length - 1)
            }
            truncatedText = `${truncatedText}\u2026`
        }
        return truncatedText
    }
}

Example at: https://codepen.io/thathurtabit/pen/rNBMrRX