# Basic Knockout Function

• ### Question

• User1103919330 posted

Could someone please advice me how can calculte the total number of hours (totalHours) from the function shown below.

```    <script type="text/javascript">

function timeSheetEntry(name, hours) {

this.name = name;
this.hours = ko.observable(hours);
this.wages = ko.computed(function () {
return this.hours()*25;

}, this);

}

function ViewModel() {

this.days =
[
{ dayName: "Monday" },
{ dayName: "Tuesday" },
{ dayName: "Wednesday" },
{ dayName: "Thursday" },
{ dayName: "Friday" },
{ dayName: "Saturday" },
{ dayName: "Sunday" }

];
this.timeSheetEntries = ko.observableArray([
new timeSheetEntry(this.days[0], "", ""),
new timeSheetEntry(this.days[1], "","")
]);

this.timeSheetEntries.push(new timeSheetEntry(this.days[0], "", ""));
};

this.totalHours = ko.computed(function () {
var total = 0;
for (var i = 0; i < this.timeSheetEntries().length; i++)
total += this.timeSheetEntries.hours;
}, this);

this.removeEntry = function (entries) {
this.timeSheetEntries.remove(entries);
}.bind(this);

}

ko.applyBindings(new ViewModel());

</script>```

Tuesday, June 12, 2012 7:39 PM

• User1779161005 posted

Umm, without running this, it's a bit hard to tell, but it looks as if this line:

`total += this.timeSheetEntries.hours;`

`total += this.timeSheetEntries()[i].hours;`

• Marked as answer by Thursday, October 7, 2021 12:00 AM
Tuesday, June 12, 2012 9:04 PM

### All replies

• User1779161005 posted

Umm, without running this, it's a bit hard to tell, but it looks as if this line:

`total += this.timeSheetEntries.hours;`

`total += this.timeSheetEntries()[i].hours;`

• Marked as answer by Thursday, October 7, 2021 12:00 AM
Tuesday, June 12, 2012 9:04 PM
• User581921910 posted

try this .

this.totalHours = ko.computed(function () {

var total = 0;

for (var i = 0; i < this.timeSheetEntries().length-1; i++)
total
+= this.timeSheetEntries[i].hours;