Identifying overflow of text or elements in JavaScript during execution

The website I'm working on has a unique design that requires users to scroll horizontally using the Arrow Keys instead of swiping. To achieve this, I must constantly check for overflow in text or elements each time a new page is loaded, and if necessary, rearrange content to support horizontal scrolling.

Furthermore, I am dynamically generating pages to ensure responsiveness; should the window dimensions change, the layout will adjust accordingly by checking for overflow.

However, implementing slide effect animations proves challenging due to the dynamic loading of elements. Since the next element is only added when needed, it's difficult to predict what will come next for the slide effect transition.

Is there an alternative method to detect elements causing overflow without preloading?

Note: Navigating to the next page using the Arrow Keys changes all 3 displayed pages on the screen.

Here is a snippet of the code I'm using to check for overflow:

OverflowY: function(parentObj){

    if(parentObj.offsetHeight < parentObj.scrollHeight){
        //Return true if overflow occurs
        return true;
    }
    else{
        return false;
    }

}

Answer №1

One effective way to address this issue is by allowing your columns to adjust automatically using only HTML and CSS. By doing so, you can focus on generating your content while leaving the layout adjustments to the browser. For valuable insights on this topic, check out a blog article tackling the same problem (). Additionally, you may find useful information in the original stackoverflow post discussing similar queries: Wrapping lists into columns.

If the above approach doesn't align with your needs, another common strategy involves verifying the calculated dimensions of elements. One method is to initially render the element outside the visible window (e.g., left: -9999px) within a container matching the desired dimensions. This allows you to assess the rendered dimensions and make necessary markup adjustments. Finally, duplicate or detach the modified DOM element and insert it into the visible window at the intended location.

Answer №2

-add a hidden div to the page with CSS properties {visibility:hidden; pointer-events: none} in order to make it invisible and unresponsive to click or touch events.

-utilize this div for measuring a page by looping through the tags instead of manipulating the DOM document directly, which can be costly in terms of performance.

-include the page in an array with a unique ID indicating its reference number (page number).

-then retrieve the current page's ID and iterate through your array to access the previous (left) or next (right) page's index.

-insert the page into the DOM document using code such as: For the next page: pgs[nextPage].style.right="-100%"; For the previous page: pgs[prePage].style.right="100%";

PageContainer.appendChild( pgs[nextPage] );

-consider using jquery.js or transit.js to handle transitions, as they can help avoid browser prefix issues related to non-standardized rules: $(pgs[next/prePage]).transition({ right:0});

-if desired, remove the "previous current" page as well, taking care to address any z-index conflicts that may arise (e.g., ensuring that the sliding page is not positioned below the current page and obscuring the effect). Be sure to set a lower z-index value for the currently displayed page.

It is worth noting that using CSS transitions can offer a simpler and more efficient solution, particularly when setting row-width to 100%, as previously recommended.

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