Passing a php value to javascript

Question

I am trying to pass a value from php to javascript. I understand one is server side and one is client side. I believe what I am doing should work fine:

PHP Code:

        echo "<script type = 'javascript/text'>var x = " . -119 . ";";
        echo "var y = " . 49 . ";";
        echo "</script>";

Javascript Code:

z = [ x, y ]

But I get the error x and y are undefined.

seems correct PHP. You should check the client-side generated source (in your browser) and check if x and y are available where you expect it to be. Try with a Javascript debugger. — Bjørne Malmanger, Mar 22 '12 at 19:07

Dark Falcon · Answer 1 · 2012-03-22T19:11:10.577

3

Type is text/javascript, not javascript/text. Your browser is probably ignoring the unrecognized script type.

Also, make sure if you replace "-119" with a variable that you take care to prevent XSS attacks by ensuring your variable contains a number or properly escaping it.

edited Mar 22 '12 at 19:11

answered Mar 22 '12 at 19:05

Dark Falcon

43,592
5
83
98

score 2 · Answer 2 · answered Mar 22 '12 at 19:06

2

The type should be text/javascript.

Also, you'll need to be sure that this script snippet is executed before the code that assignes [x,y] to z.

answered Mar 22 '12 at 19:06

GolezTrol

114,394
18
182
210

score 0 · Accepted Answer · answered Mar 22 '12 at 19:06

0

<script type = 'text/javascript'>
var x = <?php echo($x); ?>
var y = <?php echo($y); ?>
</script>

Should work

answered Mar 22 '12 at 19:06

Gabriel Santos

4,934
2
43
74

score 0 · Answer 4 · answered Mar 22 '12 at 19:08

0

Your type is wrong, it should be: text/javascript and not javascript/text

answered Mar 22 '12 at 19:08

Adriaan Nel

370
1
11

Passing a php value to javascript

4 Answers4

Linked

Related