CODEWITHSUNDEEP
javascriptarrays
Conor Jeff
Conor Jeff

Reputation: 15

Printing output in console.log for a function

I have a javascript that I am using to pull id of a tag . But due to some limitation on a platform where I need to use this I have to make this script under function so I will get the output in return. I am trying but I am failing to get it.

This is the script I have;

var arr2st3 = [].map.call(document.querySelectorAll('article:nth-child(-n+4)'), function(el) {
    return el.id.replace(/[^\d]/g, '');
});

This is what I am trying to come up;

function myfun() {
var arr2st3 = []
var arr2st3 = arr2st3.map.call(document.querySelectorAll('article:nth-child(-n+4)'), 
        function(el) {
        return el.id.replace(/[^\d]/g, '');
    });
    return;
        console.log(myfun);

}

This is the test url -> https://jsfiddle.net/v3d0nz9d/

I need to get output in return as ['123456', '7896669', '1147777']

Any help would be highly appreciated. TIA

Upvotes: 0

Views: 45

Answers (1)

Lee
Lee

Reputation: 3101

[].map is shorthand for Array.prototype.map, so you don't need to store that in a variable, you can just return the return value of your map. Anything after a return statement won't be called, so your console.log is never reached. Also, to log the values returned from your function, you need to call it in your console.log.

function myfun() {
  return [].map.call(document.querySelectorAll('article:nth-child(-n+4)'), function(el) {
    return el.id.replace(/[^\d]/g, '');
  });
}

console.log(myfun());

Upvotes: 1

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