JavaScript To Use PrevAll Like JQuery?

How to achieve this in JavaScript? function prevAll (element) { // some code to take all siblings before element? return elements; };

Solution 1:

Use the previousSibling property, and loop until it's null.

Solution 2:

You could use a generator, if the situation called for it:

const sibGen = function* (element) {
  let sibling = element.previousElementSibling; 
  while(sibling !== null) {
    sibling = sibling.previousElementSibling;
    yield sibling
  }
}

And then call it as:

const siblingGenerator = sibGen(myElement);
// filter(Boolean) removes the null element
const allSiblings = [...siblingGenerator].filter(Boolean);