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I realize that I can do:
arr = arr.filter(function(n){ return !filterFunc(n); }); But is there any way to just invert a filter without wrapping the filterer in an anon function?
It just seems cumbersome.
894
Lodash provides a reject function that does the exact opposite of filter.
JavaScript Array filter() The filter() method creates a new array filled with elements that pass a test provided by a function. The filter() method does not execute the function for empty elements. The filter() method does not change the original array.
One can use filter() function in JavaScript to filter the object array based on attributes. The filter() function will return a new array containing all the array elements that pass the given condition. If no elements pass the condition it returns an empty array.
Using filter() on an Array of Numbers The item argument is a reference to the current element in the array as filter() checks it against the condition . This is useful for accessing properties, in the case of objects. If the current item passes the condition , it gets returned to the new array.
You can use an arrow function:
const a = someArr.filter(someFilter); const a = someArr.filter(e => !someFilter(e)); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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