need help on php with javascript

Question

I need help on some update like function:

<html>
$result = mysql_query("SELECT *FROM tbl_a LEFT JOIN tbl_b lass ON tbl_b.b_id=a.class_id LEFT JOIN category ON category.category_id=tbl_a.category_id WHERE list ='{$id}'"); </br>
      while($row = mysql_fetch_array($result)){ 
     $id_list = $row['id']; 
      $name = $row['name'];
      ....
     }
    }
    echo "<script type='text/javascript'>
     var id = document.getElementById('list').value = '.$id_list;'  
     var name = document.getElementById('fname').value ='.$name;'   
    </script> ";
</html>

my problem is that i can retrieve data but it not displaying on my input elements it should be like an update function

Vlad · Accepted Answer · 2013-05-29 04:07:03Z

1

Quotes, quotes...

    echo 
    "<script type='text/javascript'>
    var id = '".$id_list."',
    name = '".$name."';

        document.getElementById('list').value = id;  
        document.getElementById('fname').value = name;
    </script> ";

Working example: http://codepad.viper-7.com/3eI3Od

answered May 29, 2013 at 4:07

Vlad

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Comments

Judson Terrell · Accepted Answer · 2013-05-29 03:49:34Z

0

You need to call your input elements and then give them the new values instead of setting variables like you are doing. Remove the "var something =" and just do document.get.......

answered May 29, 2013 at 3:49

community wiki

Judson Terrell

3 Comments

Judson Terrell Over a year ago

Also you may want to view source on your page and confirm that the script is actually getting rendered as such and not text. It looks ok though.

invisal Over a year ago

I believe it is okay since Javascript allows var a = b = 3;

Judson Terrell Over a year ago

Yes, also, I'm not that familiar with PHP but I'm willing to bet there is a built in way to do this.

invisal · Accepted Answer · 2013-05-29 03:54:19Z

0

If what you posted is the complete code, then there is no list and fname elements. Better open the page and view the source code to see if you have the right value written into your Javascript.

NOTE:
Remember that if you put your Javascript after the element HTML, Javascript cannot retrieve the element. For example:

<script>
    document.getElementById('test').value = 'Hello World';
</script>
<input type='text' id='test' value=''>

As you can see, it does not assign value to test element. Solution,

<input type='text' id='test' value=''>
<script>
    document.getElementById('test').value = 'Hello World';
</script>

Put the input before the Javascript.

answered May 29, 2013 at 3:54

invisal

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1 Comment

Judson Terrell Over a year ago

I agree we need to see all of your code and the way you have it would run top to bottom which would cause it not to be seen as Invisal mentioned

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