How Do I Pass A PHP String Into A Javascript Function Call?

Possible Duplicate: Pass a PHP string to a Javascript variable (and escape newlines) So, essentially I am trying to pass a string from a PHP page as an argument for a javascript

Solution 1:

echo"
    <table>
         <p><input type='text' id='newPostComment' value='' placeholder='WRITE YOUR COMMENT HERE...' size='35'/><input type='submit' value='UPLOAD' onclick='uploadPostComment(\"$parentID\", \"" . str_replace('"', '\"', $comment) . "\");fetchComment()'/></p>
    </table>

You need to quote the fields. If your field is an integer it does not need to be quoted, if it is a string it needs to be. I quoted both because I don't know if parentID is a string id or a numeric id. Do what your application needs of course.

Update: in regards to Michael's comment about breaking if comment contains a quote. We now escape all double quotes in $comment to prevent that.

Solution 2:

<input type='submit' value='UPLOAD' onclick='uploadPostComment($parentID, $comment);fetchComment()'/>

is your culprit, especially uploadPostComment($parentID, $comment); - if $comment is a string, you need to put quotes in place: uploadPostComment($parentID, \"$comment\");

Solution 3:

Wrap the string in escaped double quotes like \"$comment\"

$comment = "7b";
echo"
    <table>
         <p><input type='text' id='newPostComment' value='' placeholder='WRITE YOUR COMMENT HERE...' size='35'/><input type='submit' value='UPLOAD' onclick='uploadPostComment(\"$parentID\", \"$comment\");fetchComment()'/></p>
    </table>