Replacing the last element in the array with static string

Question

I'm calculating the day of the week from the API and I need to replace the last element, which will be today's day to string "Today" in an array.

For example:

I have an array todayCal=[tue, wed, thu, fri, sat, sun, mon] where mon is current date's day and I've to replace that mon with 'Today' while displaying.

my code:

 var weekdays = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
 var d = new Date();
 var day = d.getDay();
 var dayCal = weekdays[day];
 if(dayCal){
     console.log(dayCal[6],'weekday[6]');
     dayCal[6] = 'Today';
 }
 else {
     dayCal= weekdays[day];
 }

Here the last element sat is replaced with 'Today' where as I need current day to replace with 'Today'

dayCal is the day string (3 letters), so dayCal[6] isn't going to work — CertainPerformance
– CertainPerformance, Commented May 28, 2018 at 6:40
yes, that's where I got strucked on printing the lenght I'm getting as 3 . — Hema Nandagopal
– Hema Nandagopal, Commented May 28, 2018 at 6:42
Do you need to convert weekdays = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']; to something like ['Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun', 'Mon'] along the way? and then to ['Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun', 'Today'] ? — seethrough
– seethrough, Commented May 28, 2018 at 7:08

Hassan Imam · Accepted Answer · 2018-05-28 06:42:10Z

2

You can use getDay() which returns weekday as a number and replace the value in weekdays with Today using the getDay() returned value.

var weekdays = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
weekdays[new Date().getDay()] = 'Today'
console.log(weekdays);

answered May 28, 2018 at 6:42

Hassan Imam

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Comments

Sudhir Ojha · Accepted Answer · 2018-05-28 06:53:24Z

0

You can simply override the value of weakdays[] array. When you do d.getDay() it gives you a 1 pass it get the value from weakdays arrays. It is something like weakdays[1] = 'Today'. like following:

var weekdays = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
var d = new Date();
var day = d.getDay();
if(day){
   weekdays[day] = 'Today'
}else{
   console.log(weekdays);
}
console.log(weekdays);

answered May 28, 2018 at 6:53

Sudhir Ojha

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Comments

Amar Birajdar · Accepted Answer · 2018-05-28 06:59:03Z

-1

please find below modified code snippet.

 var weekdays = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
    var d = new Date();
    var day = d.getDay();
    var dayCal = weekdays[day];
    if(dayCal){
    weekdays[day] = 'Today';
    console.log(weekdays);
    }
    else{
    dayCal= weekdays[day];
    console.log(dayCal);
    }

answered May 28, 2018 at 6:59

Amar Birajdar

16

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