Question

Here is my code

var input_buttons = ["#one","#two","#three"]; 
var substr = input_buttons.split(',');
for(var i=0; i< substr.length; i++) 
{
   substr.attr('value', '');
}

Why doesn’t this work?

Answer 1

You already have an array, there is nothing to split, this only works on strings. You’d also have to pass the ID to jQuery before you can cal attr. In this case val is even better.

var input_buttons = ["#one","#two","#three"]; 
for(var i=input_buttons.length; i--;) {
   $(input_buttons[i]).val('');
}

But shorter would be using the multiple selector:

$('#one, #two, #three').val('');

or if you already have the array, create a string by joining the IDs:

$(input_buttons.join(',')).val('');