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button toggle display show hide

I want to show-hide the display of these layers with a button click. I can't figure out how to do it with 2 buttons, and 2 divs...
Html:
<div id="first">This is the FIRST div</div>
<div id="second">This is the SECOND div</div>
<button id="toggle">Show first div and hide second div</button>
<button id="toggletoo">Show second div and hide first div</button>
Css:
#first {
display: none;
}
#second {
display: none;
}
Js:
const targetDiv = document.getElementById("first");
const btn = document.getElementById("toggle");
btn.onclick = function () {
if (targetDiv.style.display !== "none") {
targetDiv.style.display = "block";
} else {
targetDiv.style.display = "none";
}
}
https://codepen.io/MaaikeNij/pen/YzrgbQw

Try with the following code:
#first{
display: block; /* <--- change */
}
#second {
display: none;
}
const firstDiv = document.getElementById("first");
const secondDiv = document.getElementById("second");
document.getElementById("toggle").onclick = function () {
if (firstDiv.style.display === "none") {
firstDiv.style.display = "block";
secondDiv.style.display = "none";
} else {
firstDiv.style.display = "none";
secondDiv.style.display = "block";
}
}

There's lots of ways to do this. One common way I've seen in various templates is to add and remove classes. Another way is to call the function from the button's onclick attribute. But my favorite is to write a function that requires no editing of the div HTML because I don't want to interfere with the HTML guy's work, I just want to put functioning code in there. (BTW, I am positive there is a more elegant way to write this, but here ya go!)
const firstDiv = document.querySelector("#first");
const secondDiv = document.querySelector("#second");
const firstButt = document.querySelector("#toggle");
const secondButt = document.querySelector("#toggletoo");
firstButt.addEventListener("click",toggleDivShowHide);
secondButt.addEventListener("click",toggleDivShowHide);
function toggleDivShowHide() {
if (firstDiv.style.display !== "none") {
firstDiv.style.display = "none";
secondDiv.style.display = "block";
} else {
firstDiv.style.display = "block";
secondDiv.style.display = "none";
}
}
You're saying "if the first div is set to none, then set it to block and set the second div to none. Otherwise, do the opposite."

I tried something different, this is working :)))
<div id="first" style="display:none;"> This is the FIRST div</div>
<div id="second" style="display:none;"> This is the SECONDdiv</div>
<input type="button" name="answer" value="Show first div and hide second div" onclick="showDivOne()" />
<input type="button" name="answer" value="Show second div and hide first div" onclick="showDivTwo()" />
function showDivOne() {
document.getElementById('first').style.display = "block";
document.getElementById('second').style.display = "none";
}
function showDivTwo() {
document.getElementById('second').style.display = "block";
document.getElementById('first').style.display = "none";
}
https://codepen.io/MaaikeNij/pen/vYeMGyN

Correction: you should add event Listener for both toggle & toggletoo.
Solution: solution with reusable code.
const Toggles = document.querySelectorAll('.toggle');
const Hides = document.querySelectorAll('.hide');
Toggles.forEach((el) => {
el.addEventListener("click", (e) => {
Hides.forEach((el) => {
el.parentElement.firstElementChild.classList.add('hide');
});
e.target.parentElement.firstElementChild.classList.toggle('hide');
});
})
.hide {
display: none;
}
<div>
<div class="hide">This is the FIRST div</div>
<button class="toggle">Show first div and hide first div</button>
</div>
<div>
<div class="hide">This is the SECOND div</div>
<button class="toggle">Show second div and hide first div</button>
</div>
<div>
<div class="hide">This is the Third div</div>
<button class="toggle">Show Third div and hide first div</button>
</div>
<div>
<div class="hide">This is the Fourth div</div>
<button class="toggle">Show Fourth div and hide first div</button>
</div>

For precisely such cases, javascript has the toggle function. I rewrite your code a little bit.
const btns = document.querySelectorAll(".toggleBtn");
btns.forEach(b => {
b.onclick = function (e) {
reset();
console.log(e.target.getAttribute('data-target'))
const target = e.target.getAttribute('data-target');
const t = document.querySelector('#' + target);
t.classList.toggle('hide');
}
});
function reset() {
const divs = document.querySelectorAll('.out');
divs.forEach(d => d.classList.add('hide'))
}
.hide {
display: none;
}
<div id="first" class="out hide">This is the FIRST div</div>
<div id="second" class="out hide">This is the SECOND div</div>
<button class="toggleBtn" data-target="first">Show first div and hide second div</button>
<button class="toggleBtn" data-target="second">Show second div and hide first div</button>

how to hide button when i click the button to show content?

i want to hide button when i click it. But i want my content to be shown when i click the button.
#sectiontohide{
display: none;}
function toggle_div_fun(id) {
var divelement = document.getElementById(id);
if(divelement.style.display == 'none')
divelement.style.display = 'block';
else
divelement.style.display = 'none';
}
<button onclick="toggle_div_fun('sectiontohide');">Display Content</button>
<div id="sectiontohide">`
this is the content i'd like to show when i click the button and button should disappear

Try this:
function toggle_div_fun(id, btn) {
var divelement = document.getElementById(id);
btn.style.display = "none";
if(divelement.style.display == 'none')
divelement.style.display = 'block';
else
divelement.style.display = 'none';
}
<button onclick="toggle_div_fun('sectiontohide', this);">Display Content</button>
<div id="sectiontohide" style="display:none">Content</div>
If you do not need to reuse the code, maybe this is simpler:
<button onclick="document.getElementById('sectiontohide').style.display='block'; this.style.display='none'">Display Content</button>
<div id="sectiontohide" style="display:none">Content</div>

Hide button after clicked

I am trying to hide a button (not inside form tags) after it has been clicked.
Once the form is shown, there is no use for the button. So i would like to hide it after clicked
Here's the existing code.
<script type="text/javascript">
$(function(){
var button = document.getElementById("info");
var myDiv = document.getElementById("myDiv");
function show() {
myDiv.style.visibility = "visible";
}
function hide() {
myDiv.style.visibility = "hidden";
}
function toggle() {
if (myDiv.style.visibility === "hidden") {
show();
} else {
hide();
}
}
hide();
button.addEventListener("click", toggle, false);
});
</script>
<input id="info" type="button" value="Имате Въпрос?" class="switchbuton">

You can use jQuery hide
$("#myDiv").hide() // to hide the div
and show like
$("#myDiv").show() // to show the div
Or toggle to toggle the visibility of dom elements
$("#myDiv").toggle() // to toggle the visibility

You can check the result here:
http://jsfiddle.net/jsfiddleCem/33axo20f/2/
Code is:
<style>
.showButon{
background:url('http://spacetelescope.github.io/understanding-json-schema/_static/pass.png');
background-repeat:repeat-y;
height:30px;
text-indent:20px;
}
</style>
<div id="myDiv">
<input id="info" type="button" value="Имате Въпрос?" class="showButon" />
</div>
(function(){
var button = document.getElementById("info");
var myDiv = document.getElementById("myDiv");
function toggle() {
if (myDiv.style.visibility === "hidden") {
myDiv.style.visibility = "visible";
} else {
myDiv.style.visibility = "hidden";
}
}
button.addEventListener("click", toggle, false);
})()

Why don't you use:
<script type="text/javascript">
$(function(){
$('#info').click(function() {
$(this).hide();
});
});
</script>
<input id="info" type="button" value="Имате Въпрос?" class="switchbuton">

how do I use the same link to "re-hide" previously hidden text via Javascript?

The below code snippet shows the invite code when I click "Invite Code". But how do I re-hide the invite code if the same link is clicked again? And can it be done where it cycles back and forth with subsequent clicks? I didn't write this code but merely modified it to my use. I am still very new to this type of thing. Thanks!
<style>
div.hide { display:none; }
div.show { text-align:center; }
</style>
<script type='text/javascript'>
function showText(show, hide) {
document.getElementById(show).className = "show";
document.getElementById(hide).className = "hide";
}
</script>
<br>
<font color="red">-</font>Home<font color="red"> / </font><a onclick="showText('text1')" href="javascript:void(0);">Invite Code</a>-</font>
<div id="text1" class="hide"><font color="red">abc123</font></div>
</center></h3>

Simply use this function:
function showText(id)
{
var elem = document.getElementById(id);
if(elem.style.display == 'none')
{
elem.style.display = 'inline';
}
else
{
elem.style.display = 'none';
}
}
<a onClick="showText('text1');" href="#">Show or Hide</a><br/>
<div style="height: 30px;"><div id="text1" style="display: none;">Text to hide or show... WTF?!</div></div>
<div>This text should not move.</div>
PS: This also works for 2 Elements...
Greetings

I really don't see the use for the show class. You could just toggle the hide class on the elements that you want to toggle.
Assume you dont need the show class, then use the classList.toggle function like this
function toggle(target){
document.getElementById(target).classList.toggle('hide');
}
.hide{ display:none }
<button onclick="toggle('test')">Show / Hide</button>
<div id="test" class="hide">Hello world!</div>

save the state with a boolean
var hided = true;
function showText(show,hide){
if (hided){
document.getElementById(show).className = "show";
document.getElementById(hide).className = "hide";
}
else{
document.getElementById(show).className = "hide";
document.getElementById(hide).className = "show";
}
hided = !hided;
}
fiddle with this code and some of your html : fiddle,
isn't it the expected behavior ?

<html>
<div ID="content" style="display:block;">This is content.</div>
<script type="text/javascript">
function toggleContent() {
// Get the DOM reference
var contentId = document.getElementById("content");
// Toggle
contentId.style.display == "block" ? contentId.style.display = "none" :
contentId.style.display = "block";
}
</script>
<button onclick="toggleContent()">Toggle</button>
</html>
//Code is pretty self explanatory.

Toggling multiple divs with one link Javascript

so, ive got 2 divs, one which is visible from start, and the other is hidden. Im trying to work out the action so that when i click a single link, the first div disappears and the second appears, and to reverse on second click. I have some knowledge of javascript, but zero knowledge of Jquery and those were the only questions i could find on here.
<script language="javascript">
function toggle() {
var ele = document.getElementById("toggleContent");
var text = document.getElementById("displayContent");
if(ele.style.display == "block") {
ele.style.display = "none;
text.innerHTML = "blog posts";
}
else {
ele.style.display = "block";
text.innerHTML = "hide posts";
}
}
</script>
this is what i have so far, which works for one div, but i dont know how to change this to work for 2 divs through the same link

You are missing a quote, add a second quote like below:
ele.style.display = "none";

Use a class rather than an ID.
<style type="css/stylesheet">
#div1 {
width:200px;
height:100px;
background:green;
}
#div2 {
width:200px;
height:100px;
background:red;
}
.toggle {
display:none;
}
</style>
<div id="menu">Toggle
</div>
<div id="div1" class="toggle">
<p class="displayContent">I'm some content 1</p>
</div>
<div id="div2" class="toggle">
<p class="displayContent">I'm some content 2</p>
</div>
<script language="javascript">
var a = document.getElementById("link");
a.onclick = function () {
var ele = document.getElementsByClassName("toggle");
for (var i = 0; i < ele.length; i++) {
var item = ele[i];
if (item.style.display == "block") {
item.style.display = "none";
} else {
item.style.display = "block";
item.innerHtml = "some content from " + i;
}
}
};
</script>
Here is the JSFiddle solution http://jsfiddle.net/dUU7j/