How to get the total number of objects created in javascript for a class? -

-

lets have following code snippet:

function airplane(id) {    this.id = id;   }  var air1 = new airplane(234); var air2 = new airplane(235); var air3 = new airplane(236);

is there way total number of airplane objects created airplane.getcreatedlength()?

you keep track of in property attached constructor:

function airplane(id) {   this.id = id;   airplane.instances += 1; }  airplane.instances = 0;  var air1 = new airplane(234); var air2 = new airplane(235); var air3 = new airplane(236);  console.log(airplane.instances) // 3

Comments

Post a Comment

Popular posts from this blog

yii2 - Yii 2 Running a Cron in the basic template -

-
i have seen instructions on running cron in advanced template, cant figure out how on basic template. have following controller in basic controllers folder. <?php namespace app\controllers; use yii\console\controller; /** * cron controller */ class croncontroller extends controller { public function actionindex() { echo "cron service runnning"; } public function actionmail($to) { echo "sending mail " . $to; } } i have navigated root of application , tried these comands yii cron php yii cron im getting unknown comand "cron" i know old question failed find actual answer this. if @ code yii exec file you'll notice requires /common/config/aliases.php file console/config/main.php. can naturally change these or copy on these advanced template. hope solves problem wanting same thing.
Read more

asp.net - 'System.Web.HttpContext' does not contain a definition for 'GetOwinContext' Mystery -

-
i realize question might seem trivial some, it's these types of things find myself fighting quite bit , want make sense of despite seeming losing battle in .net (for me anyway). so, if following: using system.web; ... applicationuser user = system.web.httpcontext.getowincontext().getusermanager<applicationusermanager>().findbyid(system.web.httpcontext.user.identity.getuserid()); that produces error in title , red getowincontext() , error cannot resolve symbol 'getowincontext()' however, if following (remove system.web in front of httpcontext ), works expected (or @ least no errors): using system.web; ... applicationuser user = httpcontext.getowincontext().getusermanager<applicationusermanager>().findbyid(system.web.httpcontext.user.identity.getuserid()); however, if (same line that's working using system.web commented out): //using system.web; ... applicationuser user = httpcontext.getowincontext().getusermana
Read more

php - How do you embed a video into a custom theme on WordPress? -

-
i'm using wordpress 4.2.3 , created custom theme use. when try embed youtube video (pasting http:// link content area), video shows in edit content area, when view site, shows text url instead. i tried sorts of things clear formatting, removing link, unchecking settings in writing area, etc. temporarily switched default wp theme , video shows up, i'm missing in template code, , can't figure out what. here code used outputting content in template. index.php <div class="video"> <?php $post_id = 26; $queried_post = get_post($post_id); echo $queried_post->post_content; ?> </div> thanks - appreciate it!
Read more