typescript - Angular 4+ using Google Analytics -


i'm trying use google analytics angular 4, can't find @type ga.js in ts.

for quick solution used in every component:

declare let ga: any;

following how resolved it:

create function load ga dynamically inserts ga script current trackingid , user.

    loadga(userid) {         if (!environment.gatrackingid) return;          let scriptid = 'google-analytics';          if (document.getelementbyid(scriptid)) {             return;         }          var s = document.createelement('script') any;         s.type = "text/javascript";         s.id = scriptid;         s.innertext = "(function(i,s,o,g,r,a,m){i['googleanalyticsobject']=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new date();a=s.createelement(o),m=s.getelementsbytagname(o)[0];a.async=1;a.src=g;m.parentnode.insertbefore(a,m)})(window,document,'script','//www.google-analytics.com/analytics.js','ga');ga('create', { trackingid: '" + **environment.gatrackingid** + "', cookiedomain: 'auto', userid: '" + **userid** + "'});ga('send', 'pageview', '/');";          document.getelementsbytagname("head")[0].appendchild(s);     }

create service implement methods need.

import { injectable } '@angular/core'; import { environment } '../../../environments/environment';  declare let ga: any;  @injectable() export class gaservice {     constructor() {     }      /**      * checks if ga script loaded.      */     private usega() : boolean {          return environment.gatrackingid && typeof ga !== undefined;     }      /**      * sends page view ga.      * @param  {string} page path portion of url. value should start slash (/) character.      */     sendpageview(         page: string     ) {         if (!this.usega()) return;         if (!page.startswith('/')) page = `/${page}`;               ga('send', 'pageview', page);     }       /**      * sends event ga.      * @param  {string} eventcategory typically object interacted (e.g. 'video')      * @param  {string} eventaction type of interaction (e.g. 'play')      */     sendevent(         eventcategory: string,         eventaction: string     ) {          if (!this.usega()) return;         ga('send', 'event', eventcategory, eventaction);     } }

then use service injected in component.

constructor(private ga: gaservice) {}  ngoninit() { this.ga.sendpageview('/join'); }


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