Remove extra white spaces from Array

Question

The elements in my list should be A1,A2,A3,A4

If user input A1,A2,A3,A4,,,,,, or A1,A2,,,A3,A4,,A5,, or A,B, ,, ,, V,,,, , , , , ,ddfd ,,,,,,,,

It should consider as

A1,A2,A3,A4

The logic written by me was

if(valueText !== null) { alert("Value Text..." + valueText); 
 valueList = valueText.split(",");
 for (var i = 0; i < valueList.length; i++)
 {
 if (valueList[i] == "")
 {
 valueList.splice(i, 1);
 alert("ValueList inside for if.."+valueList);
 }
 }
 alert("ValueList.." + valueList);
 }

But its not working properly

• etherous: Try if (!valueList[i]) instead of if (valueList[i] == "")

Answer 1

You can do something like this with match & join functions:-

var str = "A1,A2,,,A3,A4,,A5,,";
strnew = str.match(/[^ ,]+/g).join(',');
//Output--> A1,A2,A3,A4,A5

Hope this will help you...

Answer 2

You can do this with regex, for example:

var txt = 'A1,A2,,,A3,A4,,A5,,'
var res = txt.replace(/(,)1円*/g, ',').replace(/,$/, '');
//^ A1,A2,A3,A4,A5

• user3687566: Instead of using replace I want it logical.