I want to show div content on button click .and thee is 3 different button following 3 different content. I tried this logic and it made my code lengthy. how to simplify is code using loop or condition?
function replace1(){
document.getElementById("con1").style.visibility="visible";
document.getElementById("con2").style.visibility="hidden";
document.getElementById("con3").style.visibility="hidden";
document.getElementById("con4").style.visibility="hidden";
document.getElementById("con5").style.visibility="hidden";
document.getElementById("con6").style.visibility="hidden";
}
function replace2(){
document.getElementById("con1").style.visibility="hidden";
document.getElementById("con2").style.visibility="visible";
document.getElementById("con3").style.visibility="hidden";
document.getElementById("con4").style.visibility="hidden";
document.getElementById("con5").style.visibility="hidden";
document.getElementById("con6").style.visibility="hidden";
}
function replace3(){
document.getElementById("con1").style.visibility="hidden";
document.getElementById("con2").style.visibility="hidden";
document.getElementById("con3").style.visibility="visible";
document.getElementById("con4").style.visibility="hidden";
document.getElementById("con5").style.visibility="hidden";
document.getElementById("con6").style.visibility="hidden";
}Use a class - add class="con" to each element - also use hidden instead of visibility since the hidden divs still will take up space
const toggle = id => cons
.forEach(con => con.hidden = con.id !== id);
Here is a version that will change the colour of the button too.
You will need to use hidden or display:none to have the divs stay in one place
window.addEventListener('DOMContentLoaded', function() {
const cons = document.querySelectorAll('.con');
const buts = document.querySelectorAll('.toggle');
const toggle = id => cons
.forEach(con => con.hidden = con.id !== id);
document.getElementById('nav').addEventListener('click', function(e) {
const tgt = e.target.closest('button');
if (tgt.classList.contains('toggle')) {
toggle(tgt.dataset.id)
buts.forEach(but => but.classList.remove('active'));
tgt.classList.add('active');
}
})
}).active {
background-color: green;
}<nav id="nav">
<button type="button" class="toggle" data-id="con1">Con 1</button>
<button type="button" class="toggle" data-id="con2">Con 2</button>
<button type="button" class="toggle" data-id="con3">Con 3</button>
</nav>
<div id="con1" class="con" hidden>
<h1>Con 1</h1>
</div>
<div id="con2" class="con"hidden>
<h1>Con 2</h1>
</div>
<div id="con3" class="con" hidden>
<h1>Con 3</h1>
</div>.active-button {
background: red;
}
<button class="replace-button" onclick="replace(1, this)"></button>
<button class="replace-button" onclick="replace(2, this)"></button>
<button class="replace-button" onclick="replace(3, this)"></button>
function replace(visibleIndex, _this) {
const buttons = document.querySelectorAll('.replace-button');
buttons.forEach(button => button.classList.remove("active-button"));
_this.classList.add("active-button");
for(let i = 1; i < 7; i++) {
let element = document.getElementById("con" + i)
i === visibleIndex ? element.style.visibility = "visible" : element.style.visibility = "hidden";
}
}