为什么这个javascript不起作用？

Question

It's been really frustrating me i have this code:

<script type ="text/javascript">
scriptAr = new Array(); // initializing the javascript array

<?php

foreach ($docsannlist as $subdocs) 
{
    $lines = $subdocs; // read file values as array in php
    $count = count($subdocs); //this gives the count of array
    //In the below lines we get the values of the php array one by one and update it in the script array.
    foreach ($lines as $line)
    {
        print "scriptAr.push(\"$line\");
"; // This line updates the script array with new entry
    }
}

?>

document.write(scriptAr);
</script>

and for some reason its just not working. Please help!

Answer 1

The problem is probably not in your javascript code.

My guess is that you have string escaping problems. Try to use addslashes php function on the $line variable before printing.

// as simple as that
$line = addslashes($line);

Because if a line has a quote your PHP will work fine but your javascript will look like this:

scriptAr.push("some text here "a quotation" and some other text");

Which is invalid syntax.

If you use addslashes, the line will become:

scriptAr.push("some text here \"a quotation\" and some other text");​​

Which will run just fine.