How can I activate and deactivate styles in component from typescript from another component in Angular 6?












1















I have in my app.component.ts



this.renderer.listenGlobal('window', 'scroll', (event) => {
const number = window.scrollY;
if ((number > 150 || window.pageYOffset > 150) && this.location.prepareExternalUrl(this.location.path()) == '/') {
// I want to activate here style .nav-item .nav-link:not(.btn) in navbar.component.html
navbar.classList.remove('navbar-transparent');
} else {
// I want to deactivate here style .nav-item .nav-link:not(.btn) in navbar.component.html
navbar.classList.add('navbar-transparent');
}
});


In navbar.component.html I have



<li class="nav-item" *ngIf="!isDocumentation() && !isMain() && !isCloud() && !isView()">
<a class="nav-link" rel="tooltip" title="Follow us on Twitter" data-placement="bottom"
href="https://example-link.com" target="_blank">
<i class="fa fa-twitter"></i>
<p class="d-lg-none">Twitter</p>
</a>
</li>


I would like to activate and deactivate styles automatically from navbar.component.scss



  .nav-item .nav-link:not(.btn){
color: black;
border-color: black;
}


in app.component.ts in this place



        // I want to activate here style .nav-item .nav-link:not(.btn) in navbar.component.html
navbar.classList.remove('navbar-transparent');
} else {
// I want to deactivate here style .nav-item .nav-link:not(.btn) in navbar.component.html
navbar.classList.add('navbar-transparent');
}


Any ideas how can I do this?










share|improve this question



























    1















    I have in my app.component.ts



    this.renderer.listenGlobal('window', 'scroll', (event) => {
    const number = window.scrollY;
    if ((number > 150 || window.pageYOffset > 150) && this.location.prepareExternalUrl(this.location.path()) == '/') {
    // I want to activate here style .nav-item .nav-link:not(.btn) in navbar.component.html
    navbar.classList.remove('navbar-transparent');
    } else {
    // I want to deactivate here style .nav-item .nav-link:not(.btn) in navbar.component.html
    navbar.classList.add('navbar-transparent');
    }
    });


    In navbar.component.html I have



    <li class="nav-item" *ngIf="!isDocumentation() && !isMain() && !isCloud() && !isView()">
    <a class="nav-link" rel="tooltip" title="Follow us on Twitter" data-placement="bottom"
    href="https://example-link.com" target="_blank">
    <i class="fa fa-twitter"></i>
    <p class="d-lg-none">Twitter</p>
    </a>
    </li>


    I would like to activate and deactivate styles automatically from navbar.component.scss



      .nav-item .nav-link:not(.btn){
    color: black;
    border-color: black;
    }


    in app.component.ts in this place



            // I want to activate here style .nav-item .nav-link:not(.btn) in navbar.component.html
    navbar.classList.remove('navbar-transparent');
    } else {
    // I want to deactivate here style .nav-item .nav-link:not(.btn) in navbar.component.html
    navbar.classList.add('navbar-transparent');
    }


    Any ideas how can I do this?










    share|improve this question

























      1












      1








      1








      I have in my app.component.ts



      this.renderer.listenGlobal('window', 'scroll', (event) => {
      const number = window.scrollY;
      if ((number > 150 || window.pageYOffset > 150) && this.location.prepareExternalUrl(this.location.path()) == '/') {
      // I want to activate here style .nav-item .nav-link:not(.btn) in navbar.component.html
      navbar.classList.remove('navbar-transparent');
      } else {
      // I want to deactivate here style .nav-item .nav-link:not(.btn) in navbar.component.html
      navbar.classList.add('navbar-transparent');
      }
      });


      In navbar.component.html I have



      <li class="nav-item" *ngIf="!isDocumentation() && !isMain() && !isCloud() && !isView()">
      <a class="nav-link" rel="tooltip" title="Follow us on Twitter" data-placement="bottom"
      href="https://example-link.com" target="_blank">
      <i class="fa fa-twitter"></i>
      <p class="d-lg-none">Twitter</p>
      </a>
      </li>


      I would like to activate and deactivate styles automatically from navbar.component.scss



        .nav-item .nav-link:not(.btn){
      color: black;
      border-color: black;
      }


      in app.component.ts in this place



              // I want to activate here style .nav-item .nav-link:not(.btn) in navbar.component.html
      navbar.classList.remove('navbar-transparent');
      } else {
      // I want to deactivate here style .nav-item .nav-link:not(.btn) in navbar.component.html
      navbar.classList.add('navbar-transparent');
      }


      Any ideas how can I do this?










      share|improve this question














      I have in my app.component.ts



      this.renderer.listenGlobal('window', 'scroll', (event) => {
      const number = window.scrollY;
      if ((number > 150 || window.pageYOffset > 150) && this.location.prepareExternalUrl(this.location.path()) == '/') {
      // I want to activate here style .nav-item .nav-link:not(.btn) in navbar.component.html
      navbar.classList.remove('navbar-transparent');
      } else {
      // I want to deactivate here style .nav-item .nav-link:not(.btn) in navbar.component.html
      navbar.classList.add('navbar-transparent');
      }
      });


      In navbar.component.html I have



      <li class="nav-item" *ngIf="!isDocumentation() && !isMain() && !isCloud() && !isView()">
      <a class="nav-link" rel="tooltip" title="Follow us on Twitter" data-placement="bottom"
      href="https://example-link.com" target="_blank">
      <i class="fa fa-twitter"></i>
      <p class="d-lg-none">Twitter</p>
      </a>
      </li>


      I would like to activate and deactivate styles automatically from navbar.component.scss



        .nav-item .nav-link:not(.btn){
      color: black;
      border-color: black;
      }


      in app.component.ts in this place



              // I want to activate here style .nav-item .nav-link:not(.btn) in navbar.component.html
      navbar.classList.remove('navbar-transparent');
      } else {
      // I want to deactivate here style .nav-item .nav-link:not(.btn) in navbar.component.html
      navbar.classList.add('navbar-transparent');
      }


      Any ideas how can I do this?







      html css angular typescript angular6






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      share|improve this question










      asked Nov 15 '18 at 8:03









      thedboghthedbogh

      858




      858
























          1 Answer
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          I think what you are looking for is the ngClass.



          In the html:



          <inptut [ngClass]="'navbar-transparent', boolean" />


          What this will do is add the style if the boolean is true and remove it when the boolean is false. If you are using a parent child structure you can use @Input or @Output to set the value of boolean. Otherwise you can use a shared service.



          Sources: https://angular.io/api/common/NgClass
          https://angular.io/guide/component-interaction






          share|improve this answer























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            active

            oldest

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            active

            oldest

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            1














            I think what you are looking for is the ngClass.



            In the html:



            <inptut [ngClass]="'navbar-transparent', boolean" />


            What this will do is add the style if the boolean is true and remove it when the boolean is false. If you are using a parent child structure you can use @Input or @Output to set the value of boolean. Otherwise you can use a shared service.



            Sources: https://angular.io/api/common/NgClass
            https://angular.io/guide/component-interaction






            share|improve this answer




























              1














              I think what you are looking for is the ngClass.



              In the html:



              <inptut [ngClass]="'navbar-transparent', boolean" />


              What this will do is add the style if the boolean is true and remove it when the boolean is false. If you are using a parent child structure you can use @Input or @Output to set the value of boolean. Otherwise you can use a shared service.



              Sources: https://angular.io/api/common/NgClass
              https://angular.io/guide/component-interaction






              share|improve this answer


























                1












                1








                1







                I think what you are looking for is the ngClass.



                In the html:



                <inptut [ngClass]="'navbar-transparent', boolean" />


                What this will do is add the style if the boolean is true and remove it when the boolean is false. If you are using a parent child structure you can use @Input or @Output to set the value of boolean. Otherwise you can use a shared service.



                Sources: https://angular.io/api/common/NgClass
                https://angular.io/guide/component-interaction






                share|improve this answer













                I think what you are looking for is the ngClass.



                In the html:



                <inptut [ngClass]="'navbar-transparent', boolean" />


                What this will do is add the style if the boolean is true and remove it when the boolean is false. If you are using a parent child structure you can use @Input or @Output to set the value of boolean. Otherwise you can use a shared service.



                Sources: https://angular.io/api/common/NgClass
                https://angular.io/guide/component-interaction







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 15 '18 at 8:10









                SwooxSwoox

                1,6601520




                1,6601520






























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