How do I run Javascript within html code that is in a PHP variable as part of a function

Asked Sep 16 '18 at 04:08

Active Sep 16 '18 at 04:13

Viewed 31 times

I am struggling to get the Javascript action going in the "onchange" event in the below example. I have tried all sorts of different syntax, but it does not work.

function display(){

    $headingData ='<select name="input" id="input" onchange="$("#frmInput").submit()" >';
        $headingData.='<option value="...." '.$selected.'>Selection1</option>';
        $headingData.='<option value="...." '.$selected.'>Selection2</option>';
    $headingData.='</select>

    return $headingData;
}

asked Sep 16 '18 at 04:08

kangarooChris

Attach the handler properly in Javascript instead of trying to use inline attributes, which is as bad as `eval` and difficult to manage given the required escaping. – CertainPerformance Sep 16 '18 at 04:09
ok, can you give me an example? – kangarooChris Sep 16 '18 at 04:10
1

`onchange="$("#frmInput").submit()"` uses two levels of double quotes... Trying using `"` as an entity within the double quotes, or a backslashed single quotes. – Ultimater Sep 16 '18 at 04:12
1

You need to change `onchange="$("#frmInput").submit()"` to `onchange="$(\'#frmInput\').submit()"` – Nick Sep 16 '18 at 04:15
yes, that did the trick, please create answer so that I can tick it off, thanks – kangarooChris Sep 16 '18 at 04:17
so, this turned out to be just a syntax problem, but I'd still be keen to understand what the event handler would look like here? – kangarooChris Sep 16 '18 at 04:31

How do I run Javascript within html code that is in a PHP variable as part of a function

0 Answers0