map callback function javascript code example
Example 1: javascript map
const myArray = ['Sam', 'Alice', 'Nick', 'Matt'];
const newArray = myArray.map(name => {
return 'My name is ' + name;
});
console.log(newArray);
const anotherArray = myArray.map((value, index) => index + ": " + value);
console.log(anotherArray);
console.log(myArray);
Example 2: array map
const array1 = [1, 4, 9, 16];
const map1 = array1.map(x => x * 2);
console.log(map1);
Example 3: arrow function map js
const exampleArray = ['aa','bbc','ccdd'];
console.log(exampleArray.map(a => a.length));
Example 4: javascript map callback function
function doOpSingle2(arrelem,flag)
{
}
var A = ["one", "two", "three", "four"];
var theFlag = util.getMask();
var y = A.map(doOpSingle2(theFlag));