How to implement dragging a slider in lua spalsh and javascript?

[sharifulgeo]

I am trying to drag a captcha slider as presented in the site in splash using javascript an lua as shown in the below. I not able to run the script. I think the problem is javascript portion of my lua code.Specially getBoundingClientRect() in not properly executed. How can I run this code/drag the slider present in https://world.taobao.com/markets/all/sea/register .

function main(splash, args) --I am trying to drag the captcha slider present in the site https://world.taobao.com/markets/all/sea/register splash:set_custom_headers( { ["Referer"] = "https://world.taobao.com/", ["User-Agent"] = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36", ["Origin"] = "https://reg.taobao.com" } ) assert(splash:go(args.url)) assert(splash:wait(5.0)) local get_slider_dimensions = splash:jsfunc( [[ function () { var rect = document.querySelectorAll("div#nc_1__scale_text span")[0].getBoundingClientRect(); return {"x": rect.left, "y": rect.top,"width":rect.width} } ]] ) splash:set_viewport_full() splash:wait(0.1) local slider_dimensions = get_slider_dimensions() splash:wait(0.1) splash:mouse_press(slider_dimensions.x, slider_dimensions.y) splash:mouse_release(slider_dimensions.x + slider_dimensions.width, slider_dimensions.y) return splash:png() end