Question

What does

/.*=/,'' 

mean in

var id=this.href.replace(/.*=/,'');

?

Full code

function delete_subscriber(){
var id=this.href.replace(/.*=/,'');
this.id='delete_link_'+id;
if(confirm('Are you sure you want to delete this subscriber?'))
$.getJSON('delete.php?ajax=true&id='+id, remove_row);
return false;
}

I assume it is regex, but I have little knowledge about it.

Answer 1

It’s a regular expression.

The specific syntax here is as follows (comments after the #s):

/    # Begin an expression
.*   # Match all characters
=    # Until an equals sign is met
/    # End the expression

The rest of it is a function that replaces anything that is matched by this regular expression and remove it.