Udemy: Mark a course as completed/not completed given a flag

udemyCompleteCourse.js

/*
Disclaimer: This is only used for educational purpose only and does not promote or encourage any illegal activies
*/
const markCourseCompleted = true;

var selectorExpr = `ul li input[type=checkbox]:${completeCourse?'not(:checked)':'checked'}`;

// first find right side sections container
var sectionsContainer = document.querySelector('[data-purpose="curriculum-section-container"]')

// iterate through each section to find topics
for(var sectionContainer of sectionsContainer.children) {
    // if is not expanded already
    if(!sectionContainer.children[0].attributes['data-checked'].value !== 'checked') {
        sectionContainer.children[1].click();
    };
    var topicsWrapper = sectionContainer.children[2];

    // mark all topics completed/not completed based on completeCourse flag
    var checkBoxes = topicsWrapper.querySelectorAll(selectorExpr);

    for(var cb of checkBoxes) {
        cb.click();
    }
}