DVJS - Field-based progress tracker

Summary

This query will

check a note's frontmatter for fields (properties) starting with a certain string - in the example with "habit"
count how many such fields are there
check how many of them are set to "true"
calculate the percentage of "true" fields versus total fields

Setup

This is a DataviewJS query to find files that have "bad" - i.e. corrupt - frontmatter.

Code

Don't forget to start and end the code block with three backticks.

dataviewjs
// Get the current page's metadata
const page = dv.current();

// Check if the page and its frontmatter exist
if (page && page.file && page.file.frontmatter) {
    // Access the frontmatter of the current page
    const frontmatter = page.file.frontmatter;

    // Filter the frontmatter to only include keys that start with "habit"
    const habits = Object.entries(frontmatter).filter(([key, value]) => key.startsWith("habit"));

    // Count the total number of "habit" fields
    const totalHabits = habits.length;

    // Count how many of those "habit" fields are set to true
    const trueHabits = habits.filter(([key, value]) => value === true).length;

    // Calculate the completion percentage of true "habit" fields
    const completionPercentage = totalHabits > 0 ? (trueHabits / totalHabits) * 100 : 0;

    // Display the total number of "habit" fields
    dv.paragraph(`Total habit fields: ${totalHabits}`);

    // Display the number of "habit" fields that are true
    dv.paragraph(`True habit fields: ${trueHabits}`);

    // Display the completion percentage of true "habit" fields
    dv.paragraph(`Completion percentage: ${completionPercentage.toFixed(2)}%`);
} else {
    // Display a message if no frontmatter is found in the current note
    dv.paragraph("No frontmatter found in the current note.");
}

Effect

DVJS - Field-based progress tracker.png