Question

Ext.Array.slice() is used to grab a range of elements from given begin and end figure. I’m slicing out 10 elements from a large array.

Now, I’d like to slice 10 elements from the array which meet certain condition (like passing a function to slice() which returns truthy value), instead of grabbing 10 values directly. How can I do that?

Answer 1

Which version of ExtJs are you using? If you are on version 4 or above checkout the Array.filter method.

E.g.

function isBigEnough(element, index, array) {
  return (element >= 10);
}

passed = [12, 5, 8, 1, 4,15].filter(isBigEnough);
//returns [12,15]