I have a string in JavaScript (e.g #box2) and I just want the 2 from it. I tried: var thestring = $(this).attr(‘href’); var thenum = thestring.replace( /(^.+)(\w\d+\w)(.+$)/i,’$2′); alert(thenum); It still returns #box2 in the alert, how can I get it to work? It needs to accommodate for any length number attached on the end. 27 … Read more
This question already has answers here: Java int to String – Integer.toString(i) vs new Integer(i).toString() (11 answers) How do I convert from int to String? (20 answers) Closed 7 years ago. Given a number: int number = 1234; Which would be the “best” way to convert this to a string: String stringNumber = “1234”; I … Read more
I need to loop some values, for i in $(seq $first $last) do does something here done For $first and $last, i need it to be of fixed length 5. So if the input is 1, i need to add zeros in front such that it becomes 00001. It loops till 99999 for example, but … Read more
I would like to extract all the numbers contained in a string. Which is better suited for the purpose, regular expressions or the isdigit() method? Example: line = “hello 12 hi 89” Result: [12, 89] 18 s 18 I’d use a regexp : >>> import re >>> re.findall(r’\d+’, “hello 42 I’m a 32 string 30”) … Read more
What’s the “best” way to convert a number to a string (in terms of speed advantage, clarity advantage, memory advantage, etc) ? Some examples: String(n) n.toString() “”+n n+”” 24 s 24 like this: var foo = 45; var bar=”” + foo; Actually, even though I typically do it like this for simple convenience, over 1,000s … Read more
What’s the correct way to round a PHP string to two decimal places? $number = “520”; // It’s a string from a database $formatted_number = round_to_2dp($number); echo $formatted_number; The output should be 520.00; How should the round_to_2dp() function definition be? 25 s 25 You can use number_format(): return number_format((float)$number, 2, ‘.’, ”); Example: $foo = … Read more
This question already has answers here: Zero-pad digits in string (5 answers) Closed 1 year ago. I have a variable which contains the value 1234567. I would like it to contain exactly 8 digits, i.e. 01234567. Is there a PHP function for that? 1Best Answer 11 Use sprintf : sprintf(‘%08d’, 1234567); Alternatively you can also … Read more
How to find that a number is float or integer? 1.25 –> float 1 –> integer 0 –> integer 0.25 –> float 49 s 49
Is there a consistent way across browsers to hide the new spin boxes that some browsers (such as Chrome) render for HTML input of type number? I am looking for a CSS or JavaScript method to prevent the up/down arrows from appearing. <input id=”test” type=”number”> 20 20 This CSS effectively hides the spin-button for webkit … Read more
Trying to get the highest and lowest value from an array that I know will contain only integers seems to be harder than I thought. var numArray = [140000, 104, 99]; numArray = numArray.sort(); console.log(numArray) I’d expect this to show 99, 104, 140000. Instead it shows 104, 140000, 99. So it seems the sort is … Read more
