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JavaScript DOM Scripting By Example Adding and Removing Names RSVP Checkbox

Posted by Ryan Soeder
Ryan Soeder
11,056 Points

classList toggling

In place of the if...else statement, I used:

listItem.classList.toggle('responded');

Is this an appropriate alternate solution or are there issues with this that I should be aware of?

2 Answers

Steven Parker
Steven Parker
229,783 Points
Steven Parker
Steven Parker
229,783 Points

That makes the result dependent on the current class value instead of the state of the checkbox.

A variant that would operate like the original code would be:

        listItem.classList.toggle('responded', checked);
Ryan Soeder
Ryan Soeder
11,056 Points

Thanks, Steven.

James Crosslin
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
James Crosslin
Full Stack JavaScript Techdegree Graduate 16,882 Points
James Crosslin
.a{fill-rule:evenodd;}techdegree seal-36
James Crosslin
Full Stack JavaScript Techdegree Graduate 16,882 Points

I absolutely agree with this class toggling and being less verbose if you want to. Mine is way less wordy than Guil wanted, but if you're at that level, you need to practice your skills. Here's mine:

ul.addEventListener("change", (e) => {
  const li = e.target.parentNode.parentNode;
  li.classList.toggle("responded", e.target.checked);
});