This time I will show you how to filter out false, null, 0, "", undefined, and NaN values in the js array. What are the precautions for filtering out false, null, 0, "", undefined, and NaN values? The following is a practical case, let's take a look.
For false, null, 0, undefiend, NaN, take it directly! All the results are true, so here you only need to judge the empty string
function bouncer(arr) { // Don't show a false ID to this bouncer.
return arr.filter(function(val){ return !(!val || val === "");
});
}other related articles on the php Chinese website!
Related reading:How to determine the browser IE 6 7 8 9
How to solve the problem of IE11 textarea not wrapping This BUG
The above is the detailed content of How to filter out false, null, 0, '', undefined, and NaN values in a js array. For more information, please follow other related articles on the PHP Chinese website!
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
