How do you add/remove hidden in

Question

How do you add and remove 'hidden' from <p hidden>My Text</p>?

I tried removing the attribute and setting it to false but neither of them worked.

  let p = document.getElementsByTagName('p');
  let myText;
    
  for (i = 0; i < p.length; i++) {
    if (p[i].innerHTML == "My Text") {
      myText = p[i];
      break;
    }
  }

  myText.removeAttribute("hidden"); // no effect
  myText.setAttribute("hidden", false); // no effect

`hidden` is a css property of a dom object.https://www.w3schools.com/jsref/prop_style_visibility.asp https://www.w3schools.com/cssref/pr_class_visibility.asp — Tareq, Apr 14 '18 at 21:39

score 19 · Accepted Answer · answered Apr 14 '18 at 21:52

It looks fine here. Try with this code if you wish.

index.html

<html>
<head>

</head>
<body>
      <p hidden>My Text</p>
</body>
</html>

script

let p = document.getElementsByTagName('p');
let myText;

for (i = 0; i < p.length; i++) {
  if (p[i].innerHTML == "My Text") {
    // console.log(myText, p[0].innerHTML);
    myText = p[i];
    break;
  }
}

myText.removeAttribute("hidden");

You can see in codePen https://codepen.io/anon/pen/qozVaq

score 18 · Answer 2 · edited Feb 25 '21 at 09:54

18

Could you set an ID on the <p> tag and interact with it that way?

<p id="whatever" hidden>My Text</p>

And:

let p = document.getElementById('whatever');
p.removeAttribute("hidden");

edited Feb 25 '21 at 09:54

Penny Liu

15,447
5
79
98

answered Apr 14 '18 at 21:59

John Luscombe

343
2
9

score 2 · Answer 3 · answered Apr 20 '22 at 14:12

2

Instead of using addAttribute and removeAttribute use:

myText.hidden = false
// or
myText.hidden = true

answered Apr 20 '22 at 14:12

Chris Hayes

11,505
6
33
41

score 1 · Answer 4 · answered Apr 14 '18 at 22:09

Removing comparison text works fine for me:

let p = document.getElementsByTagName('p');
    let myText;
    for (i = 0; i < p.length; i++) {
        var txt = document.getElementsByTagName('p')[i].innerHTML;
        if (p[i].innerHTML == txt) {
            myText = p[i];
            break;
        }
    }

myText.removeAttribute("hidden");

Here is the working version: https://jsfiddle.net/j0467m8m/15/

DCR · Answer 5 · 2018-04-15T01:12:47.953

0

function show(){
x = document.getElementsByTagName('p');
if(x[0].style.visibility === "hidden"){
   x[0].style.visibility = "visible"   
 }else{
   x[0].style.visibility = "hidden"  
}}

<p >this is hidden</p>
<button onClick='show()'>show</button>

edited Apr 15 '18 at 01:12

answered Apr 14 '18 at 21:58

DCR

14,737
12
52
115

score 0 · Answer 6 · edited Feb 10 '23 at 00:14

I've got something similar, using js to set or remove hidden from a div, it works for fullscreen or 1200px, but didn't work for 690px:

let sidebar = document.querySelector(".dropdown-btn");
let dropdownSidebar = document.querySelector(".three");

dropdownSidebar.addEventListener("click", function(){
   sidebar.hasAttribute("hidden") ? sidebar.removeAttribute("hidden") : sidebar.setAttribute("hidden", "");
});

score -1 · Answer 7 · answered Dec 04 '21 at 15:03

-1

You must have probably given your image a display of block, this can cause the error you have now. Remove display styling, and you should be good to go.

answered Dec 04 '21 at 15:03

ABD

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