React’s one-way data-binding model means that child components cannot send back values to parent components unless explicitly allowed to do so. The React way of doing this is to pass down a callback to the child component (see Facebook’s “Forms” guide). class Parent extends Component { constructor() { this.state = { value: ” }; } … Read more
⚠️ Warning: This answer is old, does not reflect best practices, and may not be compatible with newer versions of Angular. MaxPRafferty’s answer is correct – using a function in the scope is often the nicer way to do this – but there is another option. You can use the angular.element(…).scope() method to access an … Read more
Just use: $(“input:empty”).length == 0; If it’s zero, none are empty. To be a bit smarter though and also filter out items with just spaces in, you could do: $(“input”).filter(function () { return $.trim($(this).val()).length == 0 }).length == 0;
Bind raw_input to input in Python 2: try: input = raw_input except NameError: pass Now input will return a string in Python 2 as well. If you’re using six to write 2/3 compatible code then six.input() there points to raw_input() in Python 2 and input() in Python 3.
Adding step attribute will resolve your issue. <input type=datetime-local value=”2013-10-24T20:36:00″ step=”1″> The default value of step attribute is 60 (one minute).
A simplified solution using state could look like this: class Typing extends React.Component { constructor(props) { super(props); this.state = { disabled: false } } handleGameClik() { this.setState( {disabled: !this.state.disabled} ) } render() { return( <div> <input className = “typing-container” placeholder= ” type here ” disabled = {(this.state.disabled)? “disabled” : “”}/> <button onClick = {this.handleGameClik.bind(this)}> Start … Read more
If the checkbox is checked, then the checkbox’s value will be passed. Otherwise, the field is not passed in the HTTP post. if (isset($_POST[‘mycheckbox’])) { echo “checked!”; }
You can use Scanner class Import first : import java.util.Scanner; Then you use like this. Scanner keyboard = new Scanner(System.in); System.out.println(“enter an integer”); int myint = keyboard.nextInt(); Side note : If you are using nextInt() with nextLine() you probably could have some trouble cause nextInt() does not read the last newline character of input and … Read more
In Bootstrap 3, .form-control (the class you give your inputs) has a width of 100%, which allows you to wrap them into col-lg-X divs for arrangement. Example from the docs: <div class=”row”> <div class=”col-lg-2″> <input type=”text” class=”form-control” placeholder=”.col-lg-2″> </div> <div class=”col-lg-3″> <input type=”text” class=”form-control” placeholder=”.col-lg-3″> </div> <div class=”col-lg-4″> <input type=”text” class=”form-control” placeholder=”.col-lg-4″> </div> </div> See … Read more
Try to use the pragma open instead: use strict; use warnings; use open qw(:std :utf8); while(<>){ my @chars = split //, $_; print “$_” foreach(@chars); } You need to do this because the <> operator is magical. As you know it will read from STDIN or from the files in @ARGV. Reading from STDIN causes … Read more