I need to test for "[any number]" in a string in javascript. how would i match it?
Oh, "[" and "]" also need to be matched.
so string like "[1]" or "[12345]" is a match.
Non match: "[23432" or "1]"
So for example:
$('.form .section .parent').find('input.text').each(function(index){
$(this).attr("name", $(this).attr("name").replace("[current]", "['"+index+"']"));
});
I need to replace input fields name: "items[0].firstname" to "items[1].firstname" thanks
UPDATE: for your updated question
variable.match(/\[[0-9]+\]/);
Try this:
variable.match(/[0-9]+/); // for unsigned integers
variable.match(/[-0-9]+/); // for signed integers
variable.match(/[-.0-9]+/); // for signed float numbers
Hope this helps!
if("123".search(/^\d+$/) >= 0){
// its a number
}
I always use the following regular expression to detect any kind of number in a string. Had no issues so far.
'(([\+\-]*\d*\.*\d+[eE])?([\+\-]*\d*\.*\d+))'
In detail:
'([\+\-]*\d*\.*\d+)'
to match a (non-)decimal number with(out) leading digits or sign
'([\+\-]*\d*\.*\d+[eE])?'
to match an exponential base before the number.
If there are brackets around required, you can add them inside or outside of the surrounding paranthesis:
'(\[([\+\-]*\d*\.*\d+[eE])?([\+\-]*\d*\.*\d+)\])'
In fact the surrounding paranthesis are not necessary, but i keep them to easier concatenate the expression with others.