checkbox

问题 I'm new to html so i'm unsure where im going wrong but i have the following code (i'm creating a form and adding values to the database when the user presses submit). a checkbox nested in a form - <label for="choice1">Windows 7</label> <input type="checkbox" name="choice1"/> and when the user presses 'add button' i'm trying to get the value and store it in a variable but it cannot find 'choice1'. $choice1=$_POST['choice1']; but i get " Undefined index: choice1 ". Why is this? 回答1: If the

问题 I have a listbox(JumpListBox) with ~500 items. Listbox template is a grid which have two columns - checkbox and image; To reproduce problem: I've checked two items, then I do scrolling, then I can see that checkbox not corresponding to item which was selected. When I do scrolling back to the item I was selected I see that items are not selected, but other items was selected. I recorded a video and you can see a problem. 来源： https://stackoverflow.com/questions/12026890/listbox-bindind-error

问题 I have a form. I added a JQuery onchange submit to the number_field tag. The same i want to do for the check_box_tag. I want that the form get submitted if you click on one checkbox. i tried many options but i don't get it. Hope you can help me. <%= form_tag("/rooms/list", method: "get", :name => "list", :remote => true) do %> <%= label_tag(:size, "gewünschte Raumgröße:") %> <%= number_field(:room, :size, in: 0.0..999999999, step: 1.0, :value => @size, :onchange => ("javascript: document.list

问题 I have a form. I added a JQuery onchange submit to the number_field tag. The same i want to do for the check_box_tag. I want that the form get submitted if you click on one checkbox. i tried many options but i don't get it. Hope you can help me. <%= form_tag("/rooms/list", method: "get", :name => "list", :remote => true) do %> <%= label_tag(:size, "gewünschte Raumgröße:") %> <%= number_field(:room, :size, in: 0.0..999999999, step: 1.0, :value => @size, :onchange => ("javascript: document.list

问题 I have a TaskStatus to Boolean converter that implements the IValueConverter interface in XAML for Windows Store Apps (universal apps). I have three task states and I enabled the indeterminate state in a checkbox using IsThreeState="true". Now although the IsChecked property seems to be a Boolean?, the converter always gets System.Boolean as target type. Whatever I return (null for example) always converts to false and therefore I can't get the third state in my checkbox. Is there a way to

问题 Is there any easy way to replace standard 2 radio buttons on License Wizard Page with single (checked/unchecked) Check Box in Inno Setup whithout creating Custom Page? 回答1: Since there are no settings to switch between license radio buttons and some license check box (at least just because there's no component for it on the WizardForm ) you need to create it by your own. The following code hide the original license radio buttons and creates a check box on the same place at the wizard

问题 String[] from = new String[] { CallrzDbAdapter.C_NAME,CallrzDbAdapter.C_EMAIL,CallrzDbAdapter.C_PHONE }; int[] to = new int[] {R.id.cName, R.id.cEmail, R.id.cPhone }; notes = new SimpleCursorAdapter(this, R.layout.row, cursor, from, to); ListView view =getListView(); view.setHeaderDividersEnabled(true); view.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); view.setOnItemLongClickListener(new OnItemLongClickListener() { @Override public boolean onItemLongClick(AdapterView<?> arg0, View view, int

问题 While using AngularMaterial, I have ng-checked like this: <md-list> <md-list-item ng-repeat="option in options"> <p> {{ option }} </p> <md-checkbox class="md-secondary" aria-label="{{$index}}" ng-checked="exists($index)" ng-click="toggle($index)"></md-checkbox> </md-list-item> </md-list> And my exists function: $scope.exists = function (optionNum) { console.log('Inside $scope.exists. option: '+optionNum); }; My timer: function updateTimer() { var onTimeout = function(){ mytimeout = $timeout

问题 While using AngularMaterial, I have ng-checked like this: <md-list> <md-list-item ng-repeat="option in options"> <p> {{ option }} </p> <md-checkbox class="md-secondary" aria-label="{{$index}}" ng-checked="exists($index)" ng-click="toggle($index)"></md-checkbox> </md-list-item> </md-list> And my exists function: $scope.exists = function (optionNum) { console.log('Inside $scope.exists. option: '+optionNum); }; My timer: function updateTimer() { var onTimeout = function(){ mytimeout = $timeout

问题 I am creating an Angular2 project and having a problem with two-way binding for a checkbox. I have a class called listItem and List like that: export class ListItem { public count: number; public value: string; public checked: boolean; constructor(count: number, value: string, checked: boolean) { this.count = count; this.value = value; this.checked = checked; } } export class MyList{ public category: string; public listItem : ListItem []; constructor(category: string, listItem : ListItem [])