Jquery: Remove " " value from array without using each

Question

My sample array is below, I want to remove key 1 which is having "" value.

var a=[
       0: "349,602,317,805,887,810,863,657,665,865,102,624,659,636",
       1: ""
      ]

When i was browsing i found solution like use $.each() and keep condition. But i want to filter in single shot using jquery. Any function is there !!!!

Or rather : this notation is invalid. Arrays do not take indexes. You mixed up an object and an array to get to this. — Jeremy Thille
– Jeremy Thille, Commented Feb 13, 2015 at 13:43

jAndy · Accepted Answer · 2015-02-13 13:29:45Z

3

a.filter( Boolean );

will do the trick here! Since Array.prototype.filter is a standard Array method you don't need any 3rd party library.

What happens is, we call the .filter() method with the Boolean constructor method, which, only returns a truthy value if the value that gets passed in really is truthy for Javascript. Excludes:

Empty String ("")
0
false
undefined
NaN
null

answered Feb 13, 2015 at 13:29

jAndy

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4 Comments

sivashanker Over a year ago

can i know hot boolean is filtering "" pls

jAndy Over a year ago

I actually just realized that you code is not valid. Are you sure you posted the correct code ?

jAndy Over a year ago

you should update the question with the actual input code data, otherwise this gets very confusing.

Jeremy Thille Over a year ago

It works on arrays, not objects (the OP's notation is invalid in the original post). +1 for the very elegant solution.

Mukesh Agarwal · Accepted Answer · 2015-02-13 13:34:38Z

0

you use use something like this

var index = a.indexOf("");
if(index >=0)
 a.splice(index,1);

answered Feb 13, 2015 at 13:34

Mukesh Agarwal

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Comments

AngularLover · Accepted Answer · 2015-02-13 13:38:33Z

0

you can use the delete- operator. Its not the index.

delete a[key];

edited Feb 13, 2015 at 13:38

answered Feb 13, 2015 at 13:33

AngularLover

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7 Comments

Jeremy Thille Over a year ago

Yeah but the "" is not necessarily in position 1... that would be too easy :)

AngularLover Over a year ago

you can just set a key . the 1 isnt the index, its a key. @JeremyThille

Suppen Over a year ago

Still, to find the ones with value "", you would need a loop

AngularLover Over a year ago

Yes, but in his question he wanted to remove the key. i thought it isnt depending on the value.

AngularLover Over a year ago

" " its not a key. You have to take the keys from the object. Like in this case 0 and 1

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