Only number input in php
I need to make sure that a certain Show Is there a neat way to achieve this? asked Dec 19, 2012 at 12:40
chtenbchtenb 13.9k12 gold badges73 silver badges112 bronze badges 3 HTML 5You can use HTML5 input type number to restrict only number entries:
This will work only in HTML5 complaint browser. Make sure your html document's doctype is: See also https://github.com/jonstipe/number-polyfill for transparent support in older browsers. JavaScriptUpdate: There is a new and very simple solution for this:
See this answer or try it yourself on JSFiddle. For general purpose, you can have JS validation as below:
If you want to allow decimals replace the "if condition" with this:
Source: HTML text input allow only numeric input JSFiddle demo: http://jsfiddle.net/viralpatel/nSjy7/
answered Dec 19, 2012 at 12:42
Viral PatelViral Patel 8,3063 gold badges31 silver badges29 bronze badges 15 You can also use the pattern attribute in html5:
Input validation tutorial Although, if your doctype isn't
answered Dec 19, 2012 at 12:45
martincarlin87martincarlin87 10.5k24 gold badges97 silver badges144 bronze badges 6 Quick and Easy Code
This will permit usage of numbers and backspace only. If you need decimal part too, use this code fragment
answered Dec 16, 2018 at 14:48
2 Please try this code along with the input field itself
it will work fine. answered Aug 23, 2017 at 11:12
subindas pmsubindas pm 2,46423 silver badges18 bronze badges 1 You can use following one line code as :
It will accept numbers ony. answered Aug 27, 2021 at 8:58
w.Dayaw.Daya 3541 gold badge5 silver badges11 bronze badges 2 You can use an Example: http://jsfiddle.net/SPqY3/ Please note that the input For firefox, you can validate the input by using javascript: http://jsfiddle.net/VmtF5/ Update 2018-03-12: Browser support is much better now it's supported by the following:
answered Dec 19, 2012 at 12:45
6
and in the js:
or you can write it in a complicated bu useful way:
Note:cross-browser and regex in literal. answered Feb 8, 2014 at 9:13
Fredrick GaussFredrick Gauss 5,0871 gold badge26 silver badges43 bronze badges 3 You can use the For example you can use This input field allows only numerical values. You can also specify the minimum value and maximum value that should be accepted by this field. answered May 15, 2017 at 7:19
I have used regular expression to replace the input value with the pattern needed.
answered Aug 26, 2018 at 10:27
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JSFiddle: https://jsfiddle.net/ug8pvysc/ answered Nov 19, 2015 at 8:04
2
If it is not a number the value is set to 1000 note: For some reason it only works with To make it even more exiting, you can also have a boundary:
Enjoy! answered Nov 28, 2015 at 21:41
user40521user40521 1,85919 silver badges7 bronze badges I fought with this one for a bit. Many solutions here and elsewhere seemed complicated. This solution uses jQuery/javascript alongside HTML.
In my case I was tracking small quantities with a minimum value of 1, hence the min="1" in the input tag and abc = 1 in the isNaN() check. For positive only numbers you could change those values to 0 and even simply remove the min="1" from the input tag to allow for negative numbers. Also this works for multiple boxes (and could save you some load time over doing them individually by id), just add the "validateNumber" class where needed. Explanation parseInt() basically does what you need, except that it returns NaN rather than some integer value. With a simple if() you can set the "fallback" value that you prefer in all the cases NaN is returned :-). Also W3 states here that the global version of NaN will type cast before checking which gives some extra proofing (Number.isNaN() does not do that). Any values sent to a server/backend should still be validated there! answered Jun 23, 2016 at 22:44
IsaiahIsaiah 4645 silver badges16 bronze badges Simple enough?
answered Apr 8, 2020 at 2:47
NormajeanNormajean 9473 gold badges10 silver badges21 bronze badges 1 I use this for Zip Codes, quick and easy.
answered Oct 14, 2013 at 19:56
Justin BuserJustin Buser 2,79524 silver badges32 bronze badges if you can use HTML5 you can do
P.S didnt test the code but it should be more or less correct if not check for typos :D You might wanna add a few more things like what to do if the string is null or empty etc. Also you could make this quicker :D
Peter 27.2k8 gold badges63 silver badges82 bronze badges answered Dec 19, 2012 at 12:53
czioutasczioutas 1,0322 gold badges11 silver badges37 bronze badges The accepted answer:
It's good but not perfect. It works out for me, but i get a warning that the if-statement can be simplified. Then it looks like this, which is way prettier:
Would comment the original post, but my reputation is too low to do so (just created this account). answered Feb 14, 2017 at 12:58
Chris H.Chris H. 1171 silver badge3 bronze badges Add inside your input tag: onkeyup="value=value.replace(/[^\d]/g,'')" answered Jul 5, 2018 at 4:25
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if not integer set 0
answered Dec 12, 2014 at 10:50
webskywebsky 2,9421 gold badge33 silver badges29 bronze badges Please see my project of the cross-browser filter of value of the text input element on your web page using JavaScript language: Input Key Filter . You can filter the value as an integer number, a float number, or write a custom filter, such as a phone number filter. See an example of code of input an integer number:
Also see my page "Integer field:" of the example of the input key filter answered Jul 31, 2015 at 2:37
AndrejAndrej 6294 silver badges12 bronze badges I updated some answers posted to add the following:
Suraj Rao 29.1k11 gold badges95 silver badges100 bronze badges answered Oct 17, 2018 at 12:08
When using this code you cant use "BackSpace Button" in Mozilla Firefox you can only use backspace in Chrome 47 && event.charCode < 58;" pattern="[0-9]{5}" required> answered May 25, 2015 at 3:36
For general purpose, you can have JS validation as below: It will work for Numeric keypad and normal number key's
answered Mar 27, 2018 at 7:04
Yet another method that works pretty well.
What's great about this fix is that copy-pasted values are also included in the rule. answered May 19, 2021 at 22:43
You can use it by one line
answered Jan 17 at 12:17
It's better to add "+" to REGEX condition in order to accept multiple digits (not only one digit): answered Jul 9, 2017 at 11:12
One way could be to have an array of allowed character codes and then use the Example:
answered Feb 13, 2020 at 21:30
MA1MA1 2,7275 gold badges34 silver badges51 bronze badges Use
Older browsers don’t support
answered Jun 17, 2021 at 14:14
The accepted answer is already good, however if your requirement is that you would like your user to be able to navigate their input (by using either the left or right cursor keys) and possibly amend their input (by using either the delete or the backspace key on the keyboard), you may choose to use this method. Another benefit of this method is that accepts numbers from both the top row of the keyboard in addition to numbers from the numeric keypad. The input HTML element will look something like this...
The JavaScript function will look like this:
answered Feb 17 at 17:10
How do I allow only input numbers?Restrict an HTML input text box to allow only numeric values. Using The standard solution to restrict a user to enter only numeric values is to use elements of type number. ... . Using pattern attribute. ... . Using oninput event.. Which type of input control can be used to accept only numbers in a form?Definition and Usage. The defines a field for entering a number. Use the following attributes to specify restrictions: max - specifies the maximum value allowed.
How do I restrict input in HTML?The HTML tag is used to get user input in HTML. To give a limit to the input field, use the min and max attributes, which is to specify a maximum and minimum value for an input field respectively. To limit the number of characters, use the maxlength attribute.
How do I limit a phone number in HTML?You can specify a minimum length, in characters, for the entered telephone number using the minlength attribute; similarly, use maxlength to set the maximum length of the entered telephone number.
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