.map examples
Wed Sep 22 2021 13:55:16 GMT+0000 (Coordinated Universal Time)
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@MattMoniz
#javascript
Syntax
array.map(function(currentValue, index, arr), thisValue)
Parameter Values
Parameter Description
function(currentValue, index, arr) Required. A function to be run for each element in the array.
Function arguments:
Argument Description
currentValue Required. The value of the current element
index Optional. The array index of the current element
arr Optional. The array object the current element belongs to
thisValue Optional. A value to be passed to the function to be used as its "this" value.
If this parameter is empty, the value "undefined" will be passed as its "this" value
examples
service.currencyList.map(each({value:each.currencySymbol,displayValue:each.currencySymbol}))
######################################################################
const persons = [
{firstname : "Malcom", lastname: "Reynolds"},
{firstname : "Kaylee", lastname: "Frye"},
{firstname : "Jayne", lastname: "Cobb"}
];
persons.map(getFullName);
function getFullName(item) {
return [item.firstname,item.lastname].join(" ");
}
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map example usage
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