How do you use the ? : (conditional) operator in JavaScript?

Question

In simple words, what is the ?: (conditional, "ternary") operator and how can I use it?

Answer 1

If you have one condition check instance function in javascript. it's easy to use ternary operator. which will only need one single line to implement. Ex:

    private module : string ='';
    private page:boolean = false;
    async mounted(){
     if(this.module=== 'Main')
    {
    this.page = true;}
    else{
    this.page = false;
    }
}

a function like this with one condition can be written as follow.

this.page = this.module=== 'Main' ?true:false;

condition ? if True : if False