I believe this question will be fairly easy for the ones who played
around with java script /
jquery.
var arr = new
Array();
$.map(arr, function() {
if (this.id
== productID) {
this.price = productPrice;
}else {
arr.push({id: productID, price: productPrice})
}
}
I guess
the code above explains what I want in really simple way. I would imagine this $.map
would work like this but unfortunately I couldn't get results with
this.
What is the most simple and
elegant way to do this? Do I truly go through all array just to find if a key's value is
there or not?
Does Jquery has something like
isset($array['key'])
?
EDIT
I
tried to use inArray but it keeps adding object to array even if there is a
match.
if ( $.inArray(productID,
arr) > -1) {
var number = $.inArray(productID, arr);
orderInfo[number].price = parseFloat(productPrice);
}else {
orderInfo.push({id:productID,
price:parseFloat(productPrice)});
}
Answer
If you want to do it using
.map()
or just want to know how it works you can do it like
this:
var
added=false;
$.map(arr, function(elementOfArray, indexInArray)
{
if (elementOfArray.id == productID) {
elementOfArray.price =
productPrice;
added = true;
}
}
if (!added)
{
arr.push({id: productID, price:
productPrice})
}
The
function handles each element separately. The .inArray()
proposed in other answers is probably the more efficient way to do
it.
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