The function insertAdjacentElement does not successfully include the specified element within the target element

I have developed a function that generates a div

function createDivElement(className: string): HTMLDivElement {
    const divElement = document.createElement('div')
    divElement.className = className

    return divElement
}

Following that, I crafted another function that provides the elements or structure of a Tooltip I am constructing

function generateTooltip() {
    const TooltipParent = createDivElement(`tooltip-parent-${randomString(8)}`)
    const Tooltip = createDivElement(`tooltip-${randomString(8)}`)
    const TooltipArrow = createDivElement(`tooltip-arrow-${randomString(8)}`)
    const TooltipContent = createDivElement(`tooltip-content-${randomString(8)}`)

    return { TooltipParent, Tooltip, TooltipArrow, TooltipContent }
}

Lastly, I defined a function that produces the tooltip

const Tooltip = function (props: Props) {
    'use strict'

    // rest of the code
    generateTooltip().Tooltip.insertAdjacentElement('afterbegin', generateTooltip().TooltipArrow)
    generateTooltip().Tooltip.insertAdjacentElement('beforeend', generateTooltip().TooltipContent)
    generateTooltip().TooltipParent.insertAdjacentElement('afterbegin', generateTooltip().Tooltip)

    // appending on the body
    document.body.appendChild(generateTooltip().TooltipParent)
}

Now in the DOM, only the last line of the function - where the '.tooltip-parent' div is appended to the body - is functioning properly. The elements above this line are not being added to the target element as intended.

As observed, only the element being appended to the body is visible in the DOM

https://i.sstatic.net/qieY4.png

Answer №1

Each time the function generateTooltip() is called, a new set of elements is generated. For instance, if you call generateTooltip().TooltipParent twice, you will receive two distinct TooltipParent divs. This means that no element is referenced and appended correctly.

The key is to only call generateTooltip() once and use all the elements from that initial call to construct your structure.

const TooltipElement = function (props: Props) {
  const { 
    TooltipParent, 
    Tooltip, 
    TooltipArrow, 
    TooltipContent 
  } = generateTooltip();

  Tooltip.append(TooltipArrow, TooltipContent);
  TooltipParent.append(Tooltip);
  document.body.append(TooltipParent);
}

To prevent duplicate names, I renamed Tooltip to TooltipElement, since there is already an existing Tooltip element within the function.

Although you can still utilize insertAdjacentElement instead of append, I personally do not see any significant advantage in using one over the other.

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