I have a String array likes
var arr=["1","2",""];
arr.filter(Boolean);
arr.filter(function(e){return e != ""});
And I used one of these methods but that empty string still here. note: I'm using chrome.
4 Answers
var arr=["1","2","", "3"];
//arr.filter(Boolean);
arr = arr.filter(function(num){return num!=""});
console.log(arr);You have to assign it back to arr.
Comments
Your code is working, you just need to correct type retunr to return and save modified array to variable
var arr=["1","2",""];
console.log(arr);
arr.filter(Boolean);
arr = arr.filter(function(e){return e != ""});
console.log(arr);
1 Comment
Bhushan Kawadkar
your code should work as per code snippet i have posted. Did you see any console error? can you reproduce this on code snippet or jsfiddle so that i can take a look at it
You have a typo (as @RoryMcCrossan sad), so the code must be:
var arr=["1","2",""];
var newArr = arr.filter(element => element !== "");
console.log(newArr);
Comments
you can use arr.filter to filter a value. but if you are using IE then may be filter is not workng then you need to use pure javascript.
var arr=["1","2",""];
arr=arr.filter(function(o){ return o!=""});
console.log(arr);
output
(2) ["1", "2"]
var k=[];
for(var i=0;i<arr.length;i++){ if(arr[i]!=""){k.push(arr[i])}}
console.log(k);
retunr->returnfilter()method returns a new array, it doesn't work on the existing one by reference. As such you need to usearr = arr.filter(...