--description--
Another way to change the data in an array is with the .pop()
function.
.pop()
is used to pop a value off of the end of an array. We can store this popped off value by assigning it to a variable. In other words, .pop()
removes the last element from an array and returns that element.
Any type of entry can be popped off of an array - numbers, strings, even nested arrays.
const threeArr = [1, 4, 6];
const oneDown = threeArr.pop();
console.log(oneDown);
console.log(threeArr);
The first console.log
will display the value 6
, and the second will display the value [1, 4]
.
--instructions--
Use the .pop()
function to remove the last item from myArray
and assign the popped off value to a new variable, removedFromMyArray
.
--hints--
myArray
should only contain [["John", 23]]
.
assert(
(function (d) {
if (d[0][0] == 'John' && d[0][1] === 23 && d[1] == undefined) {
return true;
} else {
return false;
}
})(myArray)
);
You should use pop()
on myArray
.
assert(/removedFromMyArray\s*=\s*myArray\s*.\s*pop\s*(\s*)/.test(__helpers.removeJSComments(code)));
removedFromMyArray
should only contain ["cat", 2]
.
assert(
(function (d) {
if (d[0] == 'cat' && d[1] === 2 && d[2] == undefined) {
return true;
} else {
return false;
}
})(removedFromMyArray)
);
--seed--
--after-user-code--
if (typeof removedFromMyArray !== 'undefined') (function(y, z){return 'myArray = ' + JSON.stringify(y) + ' & removedFromMyArray = ' + JSON.stringify(z);})(myArray, removedFromMyArray);
--seed-contents--
// Setup
const myArray = [["John", 23], ["cat", 2]];
// Only change code below this line
--solutions--
const myArray = [["John", 23], ["cat", 2]];
const removedFromMyArray = myArray.pop();