CODEWITHSUNDEEP
phpjavascriptjquery
Puja Sury
Puja Sury

Reputation: 174

Load php variable in javascript

im newbie

how to load variable php in javascript?

this is my script (popup.php)

<?php $id_user = $this->session->userdata('id'); ?>

<script type="text/javascript">rules: {
        user: {
  required: true,
  number: true,
  range: [1, 8]
}  <script>

example variable.

$id_user = 10;

how to input a id_user to range: [1,8]

so the range output is range: [1,10]

sory for my bad english

thank you so much

BR

Puja

Upvotes: 1

Views: 2427

Answers (2)

Rafay
Rafay

Reputation: 31033

try 

<script type="text/javascript">

var $uid = <?php echo json_encode($this->session->userdata('id')); ?>;
rules: {
  user: {
  required: true,
  number: true,
  range: [1, $uid]
} 
 <script>

Why json_encode? It turns the value you pass to it into valid JSON - quotes the strings, escapes quotes and other special chars, etc. Without it, you're basically going to break whenever your echoed variable contains something other than a simple alphanumeric string.

Upvotes: 1

GSto
GSto

Reputation: 42350

you can just use echo in php to create variables in javascript. personally I would handle this situation like this:

<?php echo "<script>var user_id = ".$this->session->userdata('id').";</script>"; ?>
<script>
  rules: {
    user: {
    required: true,
    number: true,
    range: [1, user_id]
   }
  }  
</script>

Upvotes: 0

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