CODEWITHSUNDEEP
jqueryhtmlbutton
user3415003
user3415003

Reputation: 27

how to disable button jquery or html

I need to disable a button if there are no records returned in a db query. What i have is this:

  $cnt= mysql_num_rows($qry_resultcnt);
  if ($ttrec >=1)
  {
  echo "msgbox";
  document.getElementById("btn1").disabled = true;//disable insert button??
  }

but this returns a error message

   Parse error: syntax error, unexpected '='

Upvotes: 1

Views: 79

Answers (2)

Seth
Seth

Reputation: 10454

You're mixing php with javascript, which is not allowed. Try either of the two options below to escape your javascript from php.

$cnt= mysql_num_rows($qry_resultcnt);
if ($ttrec >=1) {
  echo "msgbox";
  echo '<script>document.getElementById("btn1").disabled = true;</script>';
}

Or....

$cnt= mysql_num_rows($qry_resultcnt);
if ($ttrec >=1) {
  echo "msgbox";
  ?>
  <script>
    document.getElementById("btn1").disabled = true;
  </script>
  <?php
}

Although for both options, I would recommend wrapping your JS in a self invoking function so that you are certainly firing it, like so...

echo '<script> (function() { document.getElementById("btn1").disabled = true; })(); </script>';

OR....

<script>
  (function() { 
    document.getElementById("btn1").disabled = true; 
  })();
</script>

Upvotes: 1

Quentin
Quentin

Reputation: 944320

You need to output suitable client side code. You can't just use client side JS directly in your PHP.

echo '<script>document.getElementById("btn1").disabled = true;</script>';

But you would probably be better off just setting the attribute:

echo '<button etc etc disabled>etc etc</button>';

Upvotes: 1

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