Sometimes, we want to watch for array changes with JavaScript.
In this article, we’ll look at how to watch for array changes with JavaScript.
How to watch for array changes with JavaScript?
To watch for array changes with JavaScript, we use the underscore-observe
library.
We use it by installing Lodash or Underscore.
Then we add contents of the https://github.com/mennovanslooten/underscore-observe/blob/master/underscore-observe.js file into our code.
Then we watch an array for changes by writing
const a = ["zero", "one", "two", "trhee"];
_.observe(a, () => {
alert("something happened");
});
We call observe
with array a
and a callback that runs when a
changes.
Conclusion
To watch for array changes with JavaScript, we use the underscore-observe
library.