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How can I get this function to trigger as soon as the page loads?

Posted on 2016-08-22
7
Medium Priority
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142 Views
Last Modified: 2016-08-22
Here's my code:

<html>
<head>
<title>Modal Expirement</title>
</head>
<body>


<style>
/* The Modal (background) */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgb(0,0,0); /* Fallback color */
    background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}

/* Modal Content/Box */
.modal-content {
    background-color: #fefefe;
    margin: 15% auto; /* 15% from the top and centered */
    padding: 20px;
    border: 1px solid #888;
    width: 80%; /* Could be more or less, depending on screen size */
}

/* The Close Button */
 .close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

 .close:hover,
 .close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}
</style>

<!-- Trigger/Open The Modal -->
<button id="myBtn">Open Modal</button>

<!-- The Modal -->
<div id="myModal" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">x</span>
    <p>Some text in the Modal..</p>
  </div>

</div>

<script>
// Get the modal
var modal = document.getElementById('myModal');

// Get the button that opens the modal
var btn = document.getElementById("myBtn");

// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];

// When the user clicks on the button, open the modal 
btn.onclick = function() {
    modal.style.display = "block";
}

// When the user clicks on <span> (x), close the modal
span.onclick = function() {
    modal.style.display = "none";
}

// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
    if (event.target == modal) {
        modal.style.display = "none";
    }
}
</script>
</body>

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It works, just fine. Thing is, I need this function to trigger as soon as the page loads. I tried to replace the "btn.onclick=function()..." with "$(document).ready(function(){ " and it didn't work.

What am I missing?
0
Comment
Question by:brucegust
  • 4
  • 2
7 Comments
 
LVL 7

Expert Comment

by:Scobber
ID: 41765437
you don't look like you have imported jquery $(document) is a jquery function
add this
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
</head> 

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1
 
LVL 7

Expert Comment

by:Scobber
ID: 41765439
jquery will also improve your code to be cross-browser compatible too.
0
 

Author Comment

by:brucegust
ID: 41765475
Hey, Scobber!

That didn't seem to make any difference. Let's do this:

Here's the code with the part that I'm trying to get to work commented out. Copy and paste it into your browser and it's work perfectly. But then un-comment the "$(document).ready(function(){" and you'll see my problem. The presence of the library doesn't seem to make any difference. Tell me what you think...

<html>
<head>
<title>Modal Expirement</title>
</head>
<body>


<style>
/* The Modal (background) */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgb(0,0,0); /* Fallback color */
    background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}

/* Modal Content/Box */
.modal-content {
    background-color: #fefefe;
    margin: 15% auto; /* 15% from the top and centered */
    padding: 20px;$
    border: 1px solid #888;
    width: 80%; /* Could be more or less, depending on screen size */
}

/* The Close Button */
 .close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

 .close:hover,
 .close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}
</style>

<!-- Trigger/Open The Modal -->
<button id="myBtn">Open Modal</button>

<!-- The Modal -->
<div id="myModal" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">x</span>
    <p>Some text in the Modal..</p>
  </div>

</div>

<script>
// Get the modal
var modal = document.getElementById('myModal');

// Get the button that opens the modal
var btn = document.getElementById("myBtn");

// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];

// When the user clicks on the button, open the modal 
//$(document).ready(function(){ 
btn.onclick = function() {
    modal.style.display = "block";
}

// When the user clicks on <span> (x), close the modal
span.onclick = function() {
    modal.style.display = "none";
}

// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
    if (event.target == modal) {
        modal.style.display = "none";
    }
}
</script>
</body>

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LVL 7

Accepted Solution

by:
Scobber earned 2000 total points
ID: 41765495
This appears to work.

<html>
<head>
<title>Modal Expirement</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
</head>
<body>


<style>
/* The Modal (background) */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgb(0,0,0); /* Fallback color */
    background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}

/* Modal Content/Box */
.modal-content {
    background-color: #fefefe;
    margin: 15% auto; /* 15% from the top and centered */
    padding: 20px;$
    border: 1px solid #888;
    width: 80%; /* Could be more or less, depending on screen size */
}

/* The Close Button */
 .close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

 .close:hover,
 .close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}
</style>

<!-- Trigger/Open The Modal -->
<button id="myBtn">Open Modal</button>

<!-- The Modal -->
<div id="myModal" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">x</span>
    <p>Some text in the Modal..</p>
  </div>

</div>

<script>
// Get the modal
var modal = document.getElementById('myModal');

// Get the button that opens the modal
var btn = document.getElementById("myBtn");

// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];

$( document ).ready(function() {
  modal.style.display = "block";
});
// When the user clicks on the button, open the modal 
//$(document).ready(function(){ 
btn.onclick = function() {
    modal.style.display = "block";
}

// When the user clicks on <span> (x), close the modal
span.onclick = function() {
    modal.style.display = "none";
}

// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
    if (event.target == modal) {
        modal.style.display = "none";
    }
}
</script>
</body>

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0
 

Author Comment

by:brucegust
ID: 41765648
I see what I missed!

Thank you, friend!
1
 
LVL 13

Expert Comment

by:Abhijeet Rananaware
ID: 41765651
Use body onload event to run your function when page loads

<body onload="myFunction()">

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0
 
LVL 7

Expert Comment

by:Scobber
ID: 41766023
Now jQuery is imported, you can use it to make your javascript programming easier.
do a quick read on selectors and stuff, feels very css-ish compared to a complete grind.

and it is magic for cross-browser functionality
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