javascript - && is breaking the page in WordPress

Question

I added this to my WordPress page

if (script.readyState && script.onload!==null){
    script.onreadystatechange= function () {
        if (this.readyState == 'complete') mce_preload_check();
    }
}

and the && is being turned to

if (script.readyState && script.onload!==null){

I pasted this in WordPress HTML view and I made sure this was fine but WordPress keeps displaying this. How to address this?

Answer 1

You need to disable WP's autoformatting. WP will auto format even in the html editor, and the spaces and line breaks will break your javascript.

Use this plugin http://wordpress.org/extend/plugins/wp-no-format/

Update 4/08/2015: plugin is dated but still works for me.

This also works: add the plugin directly to functions.php and bracket the your javascript in <!-- noformat on --> and <!-- noformat off --> tags

Add to functions.php file:

function newautop($text)
{
    $newtext = "";
    $pos = 0;

    $tags = array('<!-- noformat on -->', '<!-- noformat off -->');
    $status = 0;

    while (!(($newpos = strpos($text, $tags[$status], $pos)) === FALSE))
    {
        $sub = substr($text, $pos, $newpos-$pos);

        if ($status)
            $newtext .= $sub;
        else
            $newtext .= convert_chars(wptexturize(wpautop($sub)));      //Apply both functions (faster)

        $pos = $newpos+strlen($tags[$status]);

        $status = $status?0:1;
    }

    $sub = substr($text, $pos, strlen($text)-$pos);

    if ($status)
        $newtext .= $sub;
    else
        $newtext .= convert_chars(wptexturize(wpautop($sub)));      //Apply both functions (faster)

    //To remove the tags
    $newtext = str_replace($tags[0], "", $newtext);
    $newtext = str_replace($tags[1], "", $newtext);

    return $newtext;
}

function newtexturize($text)
{
    return $text;   
}

function new_convert_chars($text)
{
    return $text;   
}

remove_filter('the_content', 'wpautop');
add_filter('the_content', 'newautop');

remove_filter('the_content', 'wptexturize');
add_filter('the_content', 'newtexturize');

remove_filter('the_content', 'convert_chars');
add_filter('the_content', 'new_convert_chars');