I encountered an issue while iterating through Object HTMLDivElement and applying ChileNode style z-index, resulting in an undefined output in both Firefox and Chrome browsers

function adjustPosition(currentDiv) 
{
    try {
        for (var i = 0; i < document.getElementById("parentContainer").childNodes.length; i++)
        {
           document.getElementById("parentContainer").childNodes[i].style.zIndex = 0;                       
        }

        currentDiv.style.zIndex = 1;
    } catch (error) {
        alert(error.Message);
    }
}

I'm passing an HTML Div Element to the function to adjust its position by iterating through its child nodes and setting the z-index property to zero. It works correctly in Internet Explorer but returns "undefined" in Firefox and Chrome during the first iteration. Any suggestions?

javascripthtmlcss

Answer №1

In the previous comment, I was attempting to explain that text nodes do not have a style attribute, and Internet Explorer tends to ignore them when accessing child nodes. The following code snippet should address this issue:

function updatePosition(targetElement) 
{
    try {
        for (var i = 0; i < document.getElementById("parentContainer").childNodes.length; i++)
        {
               var element = document.getElementById("parentContainer").childNodes[i];
               if(element.nodeType != 3){
                    element.style.zIndex = 0; 
               }                      
        }

        targetElement.style.zIndex = 1;
    } catch (error) {
        alert(error.Message);
    }
}

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