Select 下拉菜单中的最后一个选项或计算 ui vision rpa kantu 下拉菜单中的选项数 selenium katalon 记录器

Question

I have this drop menu

        <select name='sidebar-2_position'>
        <option value=''>&mdash; Seleziona &mdash;</option>
        <option value='1'> 1 </option>
        <option value='2'> 2 </option>
        <option value='3'> 3 </option>
        <option value='4'> 4 </option>
        <option value='5' selected='selected'> 5 </option>
        <option value='6'> 6 </option>
        </select>

I need to select last item (in my case 6) in a drop-down menu but I don't know the number of items in the drop menu because change always.

I'm interested to know what kind of xpath I can use for this feature.

I use ui vision rpa kantu which is based on selenium xpaths.

I can select the first element using this xpath (index=1, index=2, index=3)

    {
      "Command": "select",
      "Target": "xpath=//select[@name='sidebar-2_position']",
      "Value": "index=1"
    }

How do I select the last item in the drop-down menu unknowing the number of items in drop menu?

If I could know the number of items on the drop-down menu, I could solve my problem.

I need to solve this:

-) xpath that select last option unknowing number of options

or

2. javascript to have the number of element in my drop menu and after detect it via index=N

Answer 1

I'm not sure I'm 100% clear on what you're asking, but try this to find the last <option> node without having to know how many there are:

const targets = document.evaluate('//select//option[last()]/@value', document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
console.log(targets.snapshotItem(0).value)

Output:

"6"