Question

I have a function for creating a tooltip from a title. I am trying to wrap this function in an if statement that checks the title length before returning the tooltip. But it doesn’t seem to want to return anything. Is there a better way to do this then with an if statement?

$(document).ready(function() {

 if ($('#menu-headermenu a').attr('title').length == 0) {

 return null;

} else {

//Select all anchor tag with rel set to tooltip
$('#menu-headermenu a').mouseover(function(e) {

    //Grab the title attribute's value and assign it to a variable
    var tip = $(this).attr('title');    

    //Remove the title attribute's to avoid the native tooltip from the browser
    $(this).attr('title','');

    //Append the tooltip template and its value
    $(this).append('<div id="tooltip"><p>Take me to:<p><div class="tooltipcontent"' + tip + '</div></div>');     

    //Set the X and Y axis of the tooltip
    $('#tooltip').css('top', e.pageY + 10 );
    $('#tooltip').css('left', e.pageX + 20 );

    //Show the tooltip with faceIn effect
    $('#tooltip').fadeIn('500');
    $('#tooltip').fadeTo('10',0.8);

}).mousemove(function(e) {

    //Keep changing the X and Y axis for the tooltip, thus, the tooltip move along with the mouse
    $('#tooltip').css('top', e.pageY + 10 );
    $('#tooltip').css('left', e.pageX + 20 );

}).mouseout(function() {

    //Put back the title attribute's value
    $(this).attr('title',$('div.tooltipcontent').html());

    //Remove the appended tooltip template
    $(this).children('div#tooltip').remove();

});

}
});

Answer 1

Have you considered using existing solutions? (e.g. http://jquery.bassistance.de/tooltip/demo/)

As for your question, you can just add a filter to your selector: $('#menu-headermenu a[title]')

This should make it so that only elements with a title attribute will have the events attached.