JavaScript：将ID属性注入到 <input> 通过XPATH标记

Question

I'm trying to automate something using selenium, issue is that the tag has no ID, so I'm finding the control using xpath and JS as so:

document.evaluate('/html/body/header[2]/div[2]/div/div[1]/div[1]/div/div/div/form/fieldset/div[1]/input', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue

and this is the response from chrome's console:

<input> type="file" data-autosubmitoff="true" accept=".xls,.csv,.xlsx" name="File" class="hidden"></input>

which means it found my control by xpath, now I want to inject an ID so that I can refer to it from selenium.

I tried to do it like this:

document.evaluate('/html/body/header[2]/div[2]/div/div[1]/div[1]/div/div/div/form/fieldset/div[1]/input', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue.innerHTML='input id="UploadedFileFilter" type="file" data-autosubmitoff="true" accept=".xls,.csv,.xlsx" name="File" class="hidden">'

basically rewriting the whole tag with the ID in it and the console responds accordingly with this answer:

input id="UploadedFileFilter" type="file" data-autosubmitoff="true" accept=".xls,.csv,.xlsx" name="File" class="hidden">"

PERFECT! but when I look in the DOM the Input tag is still the old one, what am I getting wrong?

Thanks.

Answer 1

Instead of editing the HTML directly try just setting the id value like this:

var path = '/html/body/header[2]/div[2]/div/div[1]/div[1]/div/div/div/form/fieldset/div[1]/input';
var element = document.evaluate(path, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
element.id = 'UploadedFileFilter';

It's also worth noting that innerHTML is the HTML contained within the element. To edit the HTML of the element itself you may be able to use outerHTML .