How to get the inner html value

Question

var str_f = document.getElementById("" + j + "").innerHTML;

<p>
  <span style="color: red">advertising cctv/bust</span>
  <span style="color: red">a</span>tion
</p>

how can i get the value

Answer 1

If you want to get the innerHTML of the <p> tag then give it an id and then use the following code

<p id="para1"><span style="color: red"> advertising cctv/bust</span><span style="color: red">a</span>tion </p>


document.getElementById("para1").innerHTML;

If you want to get text content inside the element then you can use

var elem = document.getElementById("para1");
var elementText = x.innerText || x.textContent

Answer 2

This won't work, your doing a getElementById but you don't have any elements with Id's...