use of operators( >,<,==,!=) in ng-class

Question

I want to use Operators to check if value is greater or equal to other number or variable in ng-class, and then apply a style class accordingly. Basically i want to color the div based on their prob.

Is the usage of ng-class correct? It prints the value of

{{1-apStats.preMappedProbability.toFixed(3)}} 

but the ng-class tag doesn't work. Any reasons?

 <div ng-class="(1-apStats.preMappedProbability.toFixed(3) >=0.5) ? 'yellowClass':'redClass'"> {{1-apStats.preMappedProbability.toFixed(3)}} </div>

What am I doing wrong.? Thank you

Answer 1

@Subhash

In ng-class directive, first you need to give class name then condition like following -

ng-class="{moreBtnGray : condition}"

In your case - you should use two ng-class and maintain condition accordingly.

 <div ng-class="{yellowClass: condition1, redClass:condition2}">{{1-prob.p}} </div>

Answer 2

<div ng-repeat="item in probability">
 <div ng-class="(1-item.prob.p)>=0.5 ? 'yellowClass':'redClass'">{{1-item.prob.p}} </div>

Answer 3

Syntax:

<element ng-class="class : conditionExpression"></element>

Modified your ng-class this way

<div ng-class="'yellowClass': 1-apStats.preMappedProbability.toFixed(3) >= 0.5; 'redClass' : anotherCondition">{{1-apStats.preMappedProbability.toFixed(3)}}</div>