JQUERY error : null or not an object. Any Jquery Ninjas that can help? -

-

any jquery ninja's out there?

getting error in ie ?

'tip' null or not object

here small script:

  $(document).ready(function() {        //tooltips         var tip;         $(".tip_trigger").hover(function(){              //caching tooltip , removing container; appending body             tip = $(this).find('.tip').remove();             $('body').append(tip);              tip.show(); //show tooltip           }, function() {              tip.hide().remove(); //hide , remove tooltip appended body             $(this).append(tip); //return tooltip original position          }).mousemove(function(e) {         //console.log(e.pagex)               var mousex = e.pagex + 20; //get x coodrinates               var mousey = e.pagey + 20; //get y coordinates               var tipwidth = tip.width(); //find width of tooltip               var tipheight = tip.height(); //find height of tooltip               //distance of element right edge of viewport               var tipvisx = $(window).width() - (mousex + tipwidth);               var tipvisy = $(window).height() - (mousey + tipheight);              if ( tipvisx < 20 ) { //if tooltip exceeds x coordinate of viewport                 mousex = e.pagex - tipwidth - 20;                 $(this).find('.tip').css({  top: mousey, left: mousex });             } if ( tipvisy < 20 ) { //if tooltip exceeds y coordinate of viewport                 mousey = e.pagey - tipheight - 20;                 tip.css({  top: mousey, left: mousex });             } else {                 tip.css({  top: mousey, left: mousex });             }         });      });

updated code:(can't seem integrate updated code this)

$(document).ready(function() {    //tooltips     var tip = null;      $(".tip_trigger").hover(function(){          //caching tooltip , removing container; appending body         tip = $(this).find('.tip').remove();         $('body').append(tip);          tip.show(); //show tooltip       }, function() {          tip.hide().remove(); //hide , remove tooltip appended body         $(this).append(tip); //return tooltip original position      }).mousemove(function(e) {     //console.log(e.pagex)           if ( tip == null ) return;             var mousex = e.pagex + 20; //get x coodrinates           var mousey = e.pagey + 20; //get y coordinates           var tipwidth = tip.width(); //find width of tooltip           var tipheight = tip.height(); //find height of tooltip           //distance of element right edge of viewport           var tipvisx = $(window).width() - (mousex + tipwidth);           var tipvisy = $(window).height() - (mousey + tipheight);          if ( tipvisx < 20 ) { //if tooltip exceeds x coordinate of viewport             mousex = e.pagex - tipwidth - 20;             $(this).find('.tip').css({  top: mousey, left: mousex });         } if ( tipvisy < 20 ) { //if tooltip exceeds y coordinate of viewport             mousey = e.pagey - tipheight - 20;             tip.css({  top: mousey, left: mousex });         } else {             tip.css({  top: mousey, left: mousex });         }     });  }); 

$(function() {      $('.tip_trigger').each(function() {                 var tip = $(this).find('.tip');          $(this).hover(             function() { tip.appendto('body'); },             function() { tip.appendto(this); }         ).mousemove(function(e) {             var x = e.pagex + 20,                 y = e.pagey + 20,                 w = tip.width(),                 h = tip.height(),                 dx = $(window).width() - (x + w),                 dy = $(window).height() - (y + h);              if ( dx < 20 ) x = e.pagex - w - 20;             if ( dy < 20 ) y = e.pagey - h - 20;              tip.css({ left: x, top: y });         });              });  });

live demo: http://jsfiddle.net/vnbnz/4/

as can see, above code works. in live demo, notice css rule: 

.tip_trigger .tip { display:none; }

the above rule hide .tip elements, if inside .tip_trigger element. means append .tip element body, displayed because "hide-rule" applies .tip elements inside .tip_trigger.


Comments

Post a Comment

Popular posts from this blog

javascript - Enclosure Memory Copies -

-
function myclass() { //lots , lots of vars , code here. this.bar = function() { //do numerous enclosed myclass vars } this.foo = function() { alert('hello'); //don't enclosed variables. } } each instance of myclass gets own copy of bar , foo, why prototyped methods use less memory. however, know more memory use of inner methods. it seems obvious me (1) below must true. agree? not distinct myclass instances have own distinct copies of bar, must have own distinct copies of myclass enclosure. (or else how bar method keep myclass variables straight on per instance basis?) now (2) question i'm after. since inner foo method doesn't use in myclass enclosure natural qustion is: javascript smart enough not keep myclass enclosure in memory use of foo? this depend entirely on implementation not language. naive implementations keep far more around others. answer true e.g. v8 (chrome's js engine) may not true spider...
Read more

php - Replacing tags in braces, even nested tags, with regex -

-
example preg_replace('/\{[a-za-z.,\(\)0-9]+\}/', 'replaced', 'lorem ipsum dolor sit {tag1({tag2()})}, consectetur adipiscing elit.'); the result: lorem ipsum dolor sit {tag1(replaced)}, consectetur adipiscing elit. question as can see "tag2" has been replaced, want replace "tag1" know how can this? (in cases might this: {tag1({tag2({tag3()})})}) , on.) btw using preg_replace_callback, easier show preg_replace here site can test code: http://www.spaweditor.com/scripts/regex/index.php you need add curly braces character set. here's pattern used: /\{[a-za-z.,\(\)\{\}0-9]+\}/ and here result: "lorem ipsum dolor sit replaced, consectetur adipiscing elit."
Read more