CODEWITHSUNDEEP
javascripthtml
Noob
Noob

Reputation: 319

Hide and Show DIV using strict javascript with no embedded JS or CSS

I have searched and searched over so many previously answered questions and to my surprise, NONE of them answer what I am trying to accomplish. with JQuery this is easy but I am struggling with strict javascript.

I cannot have any embedded JS OR CSS in the html...

This is what I have so far:

function showhide()
{
    var billingaddress = document.getElementById("billingaddress");
    if (billingaddress.style.display === "block")
        {
            billingaddress.style.display = "none";
        }
    else if (billingaddress.style.display === "none")
        {
            billingaddress.style.display = "block";
        }
}

function init () 
{   
    var billingcheckbox = document.getElementById("billing");

    if (billingcheckbox.checked)
        {
            showhide();
        } 
    else 
        {
            showhide();
        }

It is hidden by default using CSS.

Cheers,

Upvotes: 1

Views: 139

Answers (3)

J. Rab
J. Rab

Reputation: 11

The code below should do it -- but to be sure make sure all your IDs are matching up with what is in the HTML markup:

function showhide(show) {   

    var billingaddress = document.getElementById("billingaddress"); 

    if (show) { 

        billingaddress.style.display = "block"; 

    } else {    

        billingaddress.style.display = "none";
    }
}   

function init () {   

    var billingcheckbox = document.getElementById("billing");   

    if (billingcheckbox.checked) {  

        showhide(true); 

    } else {    

        showhide(false);
    }
}

Upvotes: 0

Artem Lopatiy
Artem Lopatiy

Reputation: 938

It's as easy as this:

this keyword inside event handler references checkbox element so you can get checkbox state with this.checked property.

<input type="checkbox" id="billing">
<input type="text" id="billingaddress" placeholder="Address" style="display:none">
<script>
  var billingAddress = document.getElementById("billingaddress");
  var billingCheckbox = document.getElementById("billing");

  billingCheckbox.addEventListener('click', function(event) {
    billingAddress.style.display = this.checked ? "block" : "none";
  })
</script>

Upvotes: 1

arc
arc

Reputation: 4691

With he code you've provided, it can be done like this.

billingaddress.style.display is empty by default, you can easily check it in the if without a comparison.

function showhide() {
  if (billingaddress.style.display) billingaddress.style.display = ""
  else billingaddress.style.display = 'none';
}

var billingaddress = document.getElementById("billingaddress")
var billingcheckbox = document.getElementById("billing")
billingcheckbox.addEventListener('change', showhide)
billingcheckbox.checked = true
showhide()
<input type="checkbox" id="billing"/> Hide
<div id="billingaddress">Lorem Ipsum</div>

Upvotes: 1

Related Questions