Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question appears to be off-topic because it lacks sufficient information to diagnose the problem. Describe your problem in more detail or include a minimal example in the question itself.
Closed 8 years ago.
Improve this question
$scope.items.push({
"itemId": $scope.tabId + 1,
"itemName" : itemName,
});
I console.log($scope.itemId) every time it get pushed but it doesn't increase.
It could be done to use $http after every pushes but it's good to keep the server light. If for a unque field you don't use auto increment in backend, how would u handle this issue? I mean the best practice.
Your code will always push the same ID (as you recognized) because you never assign the incremented value to $scope.tabId.
Change it to something like this:
function yourFunction() {
// increment $scope.tabId
$scope.tabId = $scope.tabId + 1
// push the new element to your array
$scope.items.push({
"itemId": $scope.tabId,
"itemName": itemName
});
}
Related
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question appears to be off-topic because it lacks sufficient information to diagnose the problem. Describe your problem in more detail or include a minimal example in the question itself.
Closed 8 years ago.
Improve this question
var orangeCost = function (pricePerOrange, amountOfOranges) {
var totalCost = pricePerOrange * amountOfOranges;
console.log(totalCost + " Dollar total cost");
};
orangeCost(5, 5);
25 Dollar total cost
NaN Dollar total cost
Why does it also log the "NaN" part instead of only the 25 Dollar stuff ?
thank you
The only way a multiplication could result in NaN is if the variables were undefined, meaning you're calling the function without passing pricePerOrange or amountOfOranges, or if one of the variables is a string.
Make sure you're passing variables to orangeCost, and that those variables are in fact Numbers.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question appears to be off-topic because it lacks sufficient information to diagnose the problem. Describe your problem in more detail or include a minimal example in the question itself.
Closed 8 years ago.
Improve this question
Can someone please tell me how to compare elements in array with every other element. I mean in array arr = [a,b,c,d];, I would like to compare a with b,c,d , b with a,c,d, etc. And to do that dynamically, no mather of the size of the array.
Try this:
var a=["a","b","c","d"];
for(var i=0;i<a.length;i++){
for(var j=0;j<a.length;j++){
if(i!=j && a[j]===a[i]){
//match, do whatever you want
}
}
}
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question appears to be off-topic because it lacks sufficient information to diagnose the problem. Describe your problem in more detail or include a minimal example in the question itself.
Closed 9 years ago.
Improve this question
I'm having trouble adding to a var at the moment I can only get it to set, I tried a number of operators like "+=" "++" but it doesn't work :(
I have a function that gets called a number of times inside I have this
score = Math.floor((Math.random()*15)*1);
But when it gets activated the function runs and sets the score then when its run again it overwrites the old score with the new random number, I want to add the old score plus whatever is generated together do I need a 2nd var?
When I tried to use score += Math.floor((Math.random()*15)*1); I got the following error:
Uncaught ReferenceError: score is not defined
Let me take a guess, score was not declared to be an Int but a string
try
var score = 0;
score += Math.floor((Math.random()*15)*1);
The issue is that score += Math.floor((Math.random()*15)*1); really means score = score + Math.floor((Math.random()*15)*1);, but, since you haven't defined score anywhere yet, when it tries to use it in the calculation, it is "undefined" (and tells you as much :D ).
Define score before attempting to use the += operator on it and you should be fine.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question appears to be off-topic because it lacks sufficient information to diagnose the problem. Describe your problem in more detail or include a minimal example in the question itself.
Closed 8 years ago.
Improve this question
I'm currently starting to learn Javascript and would be grateful for some help with the following issue:
I'm trying to make a loop that writes a new line with a base value that adds by 1 with each line until the value is equal to 10. Basically, it's supposed to look like this:
Answer: 1
Answer: 2
Answer: 3
... and so on, until it reaches 10. There' the loop should end.
How do I achieve this?
Easy solution. Do not use in anything serious:
for (x=1;x<11;x++)
{
document.write("Answer: "+x+"<br />");
}
More versatile solution with DOM (fiddle):
<p id="numbers">
</p>
<script type="text/javascript">
for (x=1;x<11;x++)
{
document.getElementById("numbers").innerHTML+="Answer: "+x+"<br />"
}
</script>
Use a for loop like so:
for(var x = 1; x <= 10; x++) //start x as equal to one, run the code, and repeat until x is 10
console.log("Answer: " + x);//Print x
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking for code must demonstrate a minimal understanding of the problem being solved. Include attempted solutions, why they didn't work, and the expected results. See also: Stack Overflow question checklist
Closed 9 years ago.
Improve this question
I'm beginner in Emberjs,
I want to calculate the total amount in the added item list.
For example:
(03) items added in list
------------------------
Item-1 3,000.00
Item-2 4,000.00
Item-3 3,000.00
-------------------------
Total 10,000.00 Print
-------------------------
How to create the view and controller in emberjs for calculate the total amount?
How to create the PDF file and print the same output as PDF format?
Thanks advance. :)
The aggregation methods in Ember.Enumerables are handy for this type of thing. I've created a jsBin demonstrating how to use reduce() in this case. You can create a computed property for the total on your controller that sums the values of each record in your model. Note that passing 0 as the second parameter (initialValue) will seed reduce() with an integer and help you avoid the string concatenation issues you were seeing.
total: function () {
return this.get('model').reduce(function (previousValue, item, index, enumerable) {
return previousValue + item.value;
}, 0);
}.property('model.#each')
(Your second question is unrelated, but you might want to take a look at jsPDF.)