Push Return Value
Push Return Value
push changes an array by adding an item to the end. Its return value is the new length of the array, not the array itself.
That distinction matters when you save the result of a mutating method. Storing the wrong value can turn a list into a number in later code.
Read this code:
const queue = ["build", "test"];
const result = queue.push("deploy");Your task: Before running anything, predict the value stored in result and the final number of items in queue.
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Push Return Value
push changes an array by adding an item to the end. Its return value is the new length of the array, not the array itself.
That distinction matters when you save the result of a mutating method. Storing the wrong value can turn a list into a number in later code.
Read this code:
const queue = ["build", "test"];
const result = queue.push("deploy");Your task: Before running anything, predict the value stored in result and the final number of items in queue.