<TelerikUpload Title="Upload Files" Icon="@SvgIcon.Upload" ... />

function setTelerikUploadButtonText(text) {
    // Finds all the telerik blazor upload components on the page and changes the text of the upload button.

    let replaced = 0;

    const defaultText = "Upload";

    // Find all the buttons with class "k-upload-button". There should be one for each upload component.
    const buttons = document.getElementsByClassName("k-upload-button");

    for (let i = 0; i < buttons.length; i++) {
        // Find the span with class "k-button-text" and change its text.
        const spans = buttons[i].getElementsByClassName("k-button-text");

        if (spans.length > 0) {

            // Add horizontal padding to the span.
            spans[0].classList.add("px-2");
            
            // Change the text.
            spans[0].innerHTML = text ?? defaultText;

            // Insert a font awesome icon.
            spans[0].insertAdjacentHTML('afterbegin', '<i class="fas fa-upload"></i>&nbsp;');
            
            // Track how many buttons were updated.
            replaced++;
        }
    }
    
    console.info("setTelerikUploadButtonText: " + replaced + " buttons updated.");
    
    return replaced;
}

/// <summary>
    /// Finds all the telerik blazor upload components on the page and changes the text of the upload button.
    /// </summary>
    /// <returns>The number of upload components button text that were found &amp; replaced.</returns>
    public static async Task SetTelerikUploadButtonText(this IJSRuntime jSRuntime,
        string text = "Upload Files")
    {
        await jSRuntime.InvokeVoidAsync("setTelerikUploadButtonText", text);
    }