c# - Execute JavaScript querySelectorAll on especial element using Selenium - Stack Overflow

According to this question I want find an element in my JavaScript code by some thing like this:

     IJavaScriptExecutor js = (IJavaScriptExecutor)driver;
     string count = 
         js.ExecuteScript(
         "return document.querySelectorAll('ul.tag-list > li.tag-item').length")
         .ToString();

And It works correctly. But I need run my JavaScript code in the special piece of the page not the whole of a document. Is it anyway?

According to this question I want find an element in my JavaScript code by some thing like this:

     IJavaScriptExecutor js = (IJavaScriptExecutor)driver;
     string count = 
         js.ExecuteScript(
         "return document.querySelectorAll('ul.tag-list > li.tag-item').length")
         .ToString();

And It works correctly. But I need run my JavaScript code in the special piece of the page not the whole of a document. Is it anyway?

• javascript
• c#
• selenium

Share Improve this question Follow edited Jan 7, 2018 at 11:50 fool-dev 7,77799 gold badges4444 silver badges5656 bronze badges asked Jan 7, 2018 at 11:44 ali-myousefiali-myousefi 87222 gold badges1111 silver badges2727 bronze badges 1

• 1 You need to write more accurate CSS selector for that. Share your HTML. – Ratmir Asanov Commented Jan 7, 2018 at 11:48

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1 Answer 1

Sorted by: Reset to default 4

Yes, you can use querySelectorAll on an element as well. So select the element (via querySelector or getElementById), then use querySelectorAll on it:

return document.querySelector('selector for the area of the page').querySelectorAll('ul.tag-list > li.tag-item').length;

You may also be able to do it with one pound selector (adding more on the left of your existing selector) depending on whether there are multiple matches for the parent container, etc.