Question

I’m new in PHP and im using CI 😀
Now i have a view user_form_v and its controller user
in my controller i tried to pass a string variable name $validate and i will validate it in my view with javascript, so if $validate == add i will enable my input text.
This is my javascript(NOT WORKING) :

<script type="text/javascript">
        function validation(){
            var temp = <?php echo $validate?>
            if (temp == "add")document.getElementById("id").disable = false;
        }
    </script>

and this is my input text, the default is DISABLED :

<input id="id" type="text" name="ID_user" class="text" disabled="disable"
                value="<?php echo (isset($user['ID_user']))?$user['ID_user']:""?>"/>

ANSWER :
According to the choosen answer, Javascript is no needed here(sorry im a noob) so all we need to do is add this : <?php if($validate!='add'){echo "disabled";} ?> this way, my input text will be disabled if they choose update.
However it cant be work with disabled="disabled"(I dont know why)
So this is the final code for dynamic input text : <input type="text" name="ID_user" class="text"
<?php if($validate!='add'){echo "disabled";} ?>
value="<?php echo (isset($user['ID_user']))?$user['ID_user']:""?>"/>

Answer 1

In your javascript:

• .disabled not .disable
• wrap your PHP in quotes.
• are you making a call to validation()? If not, this code will never execute.

In your html:

disabled="disabled" not disabled="disable"

Update after your comments:

Are you sure there is even a need for javascript here at all? I mean, you seem to be allowing the client to make decisions that the server would be happy to do.

<input id="id" type="text" name="ID_user" class="text" value="<?= $user['ID_user']?>" <? if($validate!=='add'){echo "disabled";} ?>/>

And scrap the javascript all together. (I dropped your isset() call, throw it back in if you really need it)