Modifying CSS styles dynamically in Angular2 poses a challenge

I am utilizing angular2 to design a few input forms. They are disabled when the user lacks permission to modify them, but upon an admin login, the inputs become enabled. In order to enhance visibility, I attempted to style them with gray when disabled and white when enabled.

Within the html code:

<input type="text" class="form-control" [style.background]="cssColor" name="" [disabled]="!editionEnable" placeholder="value"
                                    [(ngModel)]="class.property" />

I also experiment with 

[style.backgroundColor]="cssColor"
, which did not alter the background color. Additionally, I tried 
[ngStyle]="{'background-color': cssColor}">
along with declaring cssColor in various ways:

  • cssColor:string="#F0F0F0 !important";
  • cssColor:string="#F0F0F0";
  • cssColor:string="F0F0F0";

I included the !important because when editing with web developer tools in Firefox, the background color does not change without it.

note: I am using Twitter Bootstrap

Any suggestions on what I might be doing incorrectly? Working with angularjs made this process much simpler.

htmlcsstwitter-bootstrapangular

Answer №1

Here is a suggestion for you to try out:

<input type="text" class="form-control" [style.background]="setCssColor()" name="" [disabled]="!editionEnable" placeholder="value"
                                    [(ngModel)]="class.property" />

You can implement something similar in your component like this:

setCssColor() {
    if(this.editionEnable) {
      return "#F0F0F0 !important";
    } else {
      return "#00ff"; //whatever color
    }
  }

I hope this solution proves to be helpful.

Answer №2

Give this a try:

Within the component:

public colorStyle:string="#F0F0F0";

In the component.html file

<input type="text" class="form-control"  [ngStyle]="{'background-color':  colorStyle}"  placeholder="Enter value" />

It may be helpful to note, Stop the application, run npm cache clear then restart the application.

In any case, the above example is functioning properly on my end.

Answer №3

It was discovered that the custom CSS file contained the following line: 

.input { background:#0f0f0f !important;}
After removing the !important, everything functioned correctly.

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