Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
513 views
in Technique[技术] by (71.8m points)

angular - Angular2 - Set A Different Color to an element Depending On Value

I am new to Angular2 and was wondering how I go about setting a font color to an element depending on the value.

My scenario is: if the value of the input field is not 100 then I want it red but if it is 100 then I want it green.

I have the following code in place but cant get it working.

XXX.component.css

.red {
    color: red; 
}

.green {
    color: green;
}

XXX.component.css

<input mdInput placeholder="Proportion '%'" [(ngModel)]="proportion ">
<p>hello <span ng-class='{red : proportion!= '100', green: proportion === '100'}'>{{proportion}}</span></p>
See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

There are two solutions to change font color but depends on you requirement

  1. If you requirement is change inline style then you can use angular NgStyle Directive which Update an HTML element styles for you..

NgStyle directive Ex:

<span [ngStyle]="{'color': proportion === '100' ? 'green' : 'red'}"></span>

        ---------------------- OR -----------------------------------

<span [style.color]="proportion === '100' ? 'green' : 'red'"></span>
  1. If you requirement is change class then you can use angular NgClass Directive which Adds and removes CSS classes on an HTML element...

NgClass directive Ex:

<span [ngClass]="{proportion === '100' ? 'green': 'red'}"></span>

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

2.1m questions

2.1m answers

60 comments

57.0k users

...