The input textbox <input type=”text” onKeyDown=”myFunction()” value=”” /> JavaScript function myFunction() { var e = event || window.event; // get event object var key = e.keyCode || e.which; // get key cross-browser if (key < 48 || key > 57) { //if it is not a number ascii code //Prevent default action, which is inserting … Read more
I found the answer already. The procedure is as follows: Execute doxygen -g. Doxyfile will be generated. Open Doxyfile and find INPUT = After the ‘INPUT =’ put the name of the directory where the source code is located. Execute in the command line doxygen Doxyfile. The output will be put into the directory where … Read more
read -rsn1 Expect only one letter (and don’t wait for submitting) and be silent (don’t write that letter back).
This question was answered here: Javascript detect if input is focused Taken from the above answer: this === document.activeElement // where ‘this’ is a dom object
In java you don’t check if a key is pressed, instead you listen to KeyEvents. The right way to achieve your goal is to register a KeyEventDispatcher, and implement it to maintain the state of the desired key: import java.awt.KeyEventDispatcher; import java.awt.KeyboardFocusManager; import java.awt.event.KeyEvent; public class IsKeyPressed { private static volatile boolean wPressed = false; … Read more
Here’s a drop-in replacement for the <input/> tag. It’s a simple functional component that uses hooks to preserve and restore the cursor position: import React, { useEffect, useRef, useState } from ‘react’; const ControlledInput = (props) => { const { value, onChange, …rest } = props; const [cursor, setCursor] = useState(null); const ref = useRef(null); … Read more
There’s a “simple” way to do this, and a “smart” way. If you ask me, doing things the smart way is not always the best, because I may be harder to work with later. In this case, both are quite understandable. Side note: One thing I’d ask you to think about, is do you need … Read more
In case someone want the placeholders selectors for all browsers : .mainLoginInput::-webkit-input-placeholder { font-family: ‘myFont’, Arial, Helvetica, sans-serif; } .mainLoginInput:-ms-input-placeholder { font-family: ‘myFont’, Arial, Helvetica, sans-serif; } .mainLoginInput:-moz-placeholder { font-family: ‘myFont’, Arial, Helvetica, sans-serif; } .mainLoginInput::-moz-placeholder { font-family: ‘myFont’, Arial, Helvetica, sans-serif; }
Wrap the code within $(document).ready(function(){………..}); handler , also remove the ; after if $(document).ready(function(){ $(‘#purpose’).on(‘change’, function() { if ( this.value == ‘1’) //…………………^……. { $(“#business”).show(); } else { $(“#business”).hide(); } }); }); Fiddle Demo
I don’t see a reason why you need JS to do this when such feature is already provided in HTML. <label for=”YOURID”>The clickable region<label> <input id=”YOURID” type=”text” />