input-field

问题 I'm making a Web application that tests typing speeds. It gives the user some text to type, and an input box to type into. If the user types a wrong key, I'm using preventDefault on the produced key event to prevent the wrong character from being entered into the input box (I instead show the user an error message). The problem is, preventDefault doesn't prevent backspaces from being entered. Ideally, since wrong keys presses will never be entered into the text box, it doesn't make sense to

问题 I'm making a Web application that tests typing speeds. It gives the user some text to type, and an input box to type into. If the user types a wrong key, I'm using preventDefault on the produced key event to prevent the wrong character from being entered into the input box (I instead show the user an error message). The problem is, preventDefault doesn't prevent backspaces from being entered. Ideally, since wrong keys presses will never be entered into the text box, it doesn't make sense to

来源： https://stackoverflow.com/questions/50230964/how-to-disable-keyboard-keys-using-angular-2-but-the-keys-should-be-work-on-h

问题 I have a input field of type number. I want to accept Persian/Arabic numbers as well in this field. I wanted to convert these numbers to English using jQuery, but it seems I can't retrieve these values. jQuery('input[type="number"]').on('input', function() { console.log(jQuery(this).val()); }); For non-English numbers val() is empty string. Is there any way to get the value of a number input field, if the value is not a English number? UPDATE: Persian numbers are: ۰ ۱ ۲ ۳ ۴ ۵ ۶ ۷ ۸ ۹ English

问题 I have a input field of type number. I want to accept Persian/Arabic numbers as well in this field. I wanted to convert these numbers to English using jQuery, but it seems I can't retrieve these values. jQuery('input[type="number"]').on('input', function() { console.log(jQuery(this).val()); }); For non-English numbers val() is empty string. Is there any way to get the value of a number input field, if the value is not a English number? UPDATE: Persian numbers are: ۰ ۱ ۲ ۳ ۴ ۵ ۶ ۷ ۸ ۹ English

问题 If I use an input field of type="number" with step="100". I don't want odd numbers to be invalid. I just want increase or decrease to be with a value of 1000. <input type="number" min="100" max="999999" step="100" /> If the user enters the value "199" and submits, he/she gets an error because the value isn't dividable by 100. But all I want with the step-value is to control the behavior of the spinner, e.g. if the user click up I want the value 199 to become 200 and if he/she clicks down I

问题 From this question I found out how to ask the user for an input using wxPython. But how can I ask for multiple information at the same time? Basicly I want to create a message box with three input fields under each other asking for "Name" "Surname" "Nickname". I also want to have the code really simple like: name,surname,nick = askInfo("Name","Surname","Nickname") It doesn't have to be wxPython but it MUST not be using Tkinter. 回答1: Build a wx.Dialog there are numerous examples out there.

问题 I have an input field of type number which ranges from 1 to 4096 as follows: <input max="4096" min="1" name="size" step="2" type="number" value="4096"> Iam currently using a step = 2 , that result in numbers 2, 4, 6, 8, 10, ... How can I modify the step to double the value 1 , 2, 4, 8, 16,... ? Note : The field can contain only these values (The user shoudn't be able to insert 3 , 5 , 6, 7, ... ). And it should work on both increment and decrement. 回答1: The native stepper doesn't suite your

问题 I have an HTML form with a bunch of input fields (of type text and select). I am floating them such that there are two on each row. In all browsers (including IE7), everything works okay, but for some reason in IE8, whenever I click inside any of the fields or their labels, that field or a surrounding one vertically moves up or down. The position then returns to normal once I click away from the box, though then another nearby box might move. Also, not all of the textbox fields have this

问题 I have some issues with calculating some stuff with JS and getting the right values out of the input fields (number). When I use this code it doesn't show anything. So what is wrong with my JS? Do I need to include a jQuery file? <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> </head> <body> <form id="frm1" action="Calculate.html"> <table width="350px" border="1px"> <tr> <th colspan="2">Availability</th> </tr> <tr> <td>Total Production Time</td> <td><input type=