Clicking on a custom element with Selenium (RSelenium)-CodePudding

I need to click on an element with the following unique identifier:

<mat-icon
class="mat-icon notranslate icon-arrow-down-tail mat-icon-no-color"
fontset="icon-arrow-down-tail"
role="img"
aria-hidden="true">
   ::before
</mat-icon>

I think this is the proper way to select a custom-element in RSelenium:

down <- remDr$findElement(using="xpath", value="//mat-icon[@class='mat-icon.notranslate.icon-arrow-down-tail.mat-icon-no-color']")

The element is located in an iframe. I've switched to the iframe, but I imagine there could still be something more complex going on. I'm trying to narrow down what the source of the problem is.

So, my question is: did I properly select a custom element? If not, how do I do that? If I know I selected it properly, I can figure out where else to debug...

(Website is proprietary/requires a login or I'd share it).

CodePudding user response：

If an element you wish to extract the value is in an Iframe, it needs to be switched focus first and then you can proceed to take the element by ID/Class

for example, I used to click a Button inside an Iframe from a site called "https://forexsb.com/historical-forex-data"

iframe_detect <- remDr$findElements(using = "xpath", value = "//iframe[@id='data-app-frame']")
remDr$switchToFrame(iframe_detect[[1]])
load_data_element <- remDr$findElement(using="xpath", value="//button[@id='btn-load-data']")
load_data_element$clickElement()

In above what you use of defining Class element:

down <- remDr$findElement(using="xpath", value="//mat-icon[@class='mat-icon.notranslate.icon-arrow-down-tail.mat-icon-no-color']")

I guess this is a proper full class identifier, since there is multiple name of class joint with dot operator. But in my experience, if using these can come out didn't work, I use just the first class name before the dot operator

so if I had to rewrite (note: only work if there are no more element have the same class name, or else it may take the whole element which match by the Class):

down <- remDr$findElement(using="xpath", value="//mat-icon[@class='mat-icon']")