How do I delete a '_' prefix on a variable using jQuery?

Question

I have a variable that reads as _123456 and I need to delete the underscore prefix on this variable before storing it to a field. How do I do this?

 var value = "_123456"

Answer 1

This is just generic Javascript, not specific to jQuery. You'd do something like this:

var result = value.substring(1);

Or...

var result = value.replace(/^_/, '');

Or... (if there can be more than one underscore)

var result = value.replace(/^_+/, '');

Answer 2

value.substr(1)

No need for jQuery!

Answer 3

var value = "_123456"
var trimmed = value.substring(1); // "123456"

Answer 4

[not recommended] To do this with jQuery (and an if):

var element = $('<div></div>'); 
var text = "_123456"; 
for(var i = 0; i < text.length; i++) { 
   if ( i > 0 ) {
      element.append('<span>' + text[i] + '</span>'); 
   }
}
var trimmed = element.text();

I tried element.remove(':first') instead of the if, but it didn't seem to work. No idea why.

Answer 5

FYI - If the underscore is after the digits then you could use parseInt()

var value = "123456_"  

So for example parseInt("123456_") will return the number 123456.