javascript - Change class jquery -


good evening, can not run code: in practice, add new class not delete old one. it's simple system of , dislike

$query2 = mysql_query("select * totlike id_user_like = $id_user , id_post_like = ". $risultato['id']."");  if (mysql_num_rows($query2) == 1) {   $like = '<i class="glyphicon glyphicon-heart" id="'. $risultato['id'] .'"></i>'; } else {   $like = '<i class="glyphicon glyphicon-heart-empty" id="'. $risultato['id'] .'"></i>'; } 
var elem = $('#' + id_post).attr('class'); if (elem == "glyphicon glyphicon-heart") {   $('#' + id_post).removeclass('glyphicon glyphicon-heart').addclass('glyphicon glyphicon-heart-empty');   } else {     $('#' + id_post).removeclass('glyphicon glyphicon-heart-empty').addclass('glyphicon glyphicon-heart'); }

i have cleaned code little, seems fine. not sure if snippet below shows working fine. 

function toggleheart(id_post) {      var element = $('#' + id_post);      if (element.hasclass("glyphicon-heart")) {          element.removeclass('glyphicon-heart');          element.addclass('glyphicon-heart-empty');        } else {          element.removeclass('glyphicon-heart-empty');          element.addclass('glyphicon-heart');      }  }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" type="text/css" rel="stylesheet">    <p>click on button or heart toggle</p>  <i class="glyphicon glyphicon-heart" id="1" onclick="toggleheart(1)">1</i>  <button onclick="toggleheart(1)">toggle</button>  <br />  <i class="glyphicon glyphicon-heart-empty" id="2" onclick="toggleheart(2)">2</i>  <button onclick="toggleheart(2)">toggle</button>


Comments

Post a Comment

Popular posts from this blog

Is there a better way to structure post methods in Class Based Views -

i'm using class based views in django , never specify url in ajax calls , omit action parameter in form because know these requests go through post method of class based view. notice view - profile page make many requests depending on user updating on page - post method become convoluted , if/else mess example: def post(self, request, *args, **kwargs): # handle user changing available date if request.post.get('availabledate') != none: self.updateavailabledate(request) return jsonresponse({'result':'success'}) if request.post.get('newprojectname') != none: creative_user = creativeuserprofile.objects.get(id = request.user.id) project = project.create_project(creative_user, request.post['newprojectname']) project.save() return jsonresponse({'projectid': project.id }) if request.post.get('projectimage') != none , request.files['file']: proj...
Read more

performance - Why is XCHG reg, reg a 3 micro-op instruction on modern Intel architectures? -

i'm doing micro-optimization on performance critical part of code , came across sequence of instructions (in at&t syntax): add %rax, %rbx mov %rdx, %rax mov %rbx, %rdx i thought had use case xchg allow me shave instruction , write: add %rbx, %rax xchg %rax, %rdx however, dimay found agner fog's instruction tables , xchg 3 micro-op instruction 2 cycle latency on sandy bridge, ivy bridge, broadwell, haswell , skylake. 3 whole micro-ops , 2 cycles of latency! 3 micro-ops throws off 4-1-1-1 cadence , 2 cycle latency makes worse original in best case since last 2 instructions in original might execute in parallel. now... cpu might breaking instruction micro-ops equivalent to: mov %rax, %tmp mov %rdx, %rax mov %tmp, %rdx where tmp anonymous internal register , suppose last 2 micro-ops run in parallel latency 2 cycles. given register renaming occurs on these micro-architectures, though, doesn't make sense me done way. why wouldn't register renamer ...
Read more

c# - Asp.net web api : redirect unauthorized requst to forbidden page -

im trying redirect unauthorized request forbidden page instead i'm getting forbidden page in response body , how can fix ? here's startup class : app.createperowincontext(storecontext.create); app.createperowincontext<applicationusermanager>(applicationusermanager.create); app.createperowincontext<applicationsigninmanager>(applicationsigninmanager.create); app.usecookieauthentication(new cookieauthenticationoptions { authenticationtype = defaultauthenticationtypes.applicationcookie, expiretimespan = timespan.fromdays(30), }); app.useexternalsignincookie(defaultauthenticationtypes.externalcookie); app.usetwofactorsignincookie(defaultauthenticationtypes.twofactorcookie, timespan.fromminutes(5)); app.usetwofactorrememberbrowsercookie(defaultauthenticationtypes.twofactorrememberbrowsercookie); the method im trying reach : [httpget] [authorize(roles = "admin")] public string getcurrentusername() { return userman...
Read more