onchange

问题 I am trying to change the value of a hidden input field, depending on the value of a checkbox. I don't know much about Javascript but this is what I have so far. <input type="hidden" value="" id="delterms" name="O_" /> <input type="checkbox" id="checkbox" onchange="terms()" /> <script type="text/javascript"> var checked = document.getElementById('checkbox').checked; function terms() { if (checked==false) { document.getElementById('delterms').value='' } else { document.getElementById('delterms

问题 <input class="jProblemClass" id="Checkbox{%= ID %}" type="checkbox" onchange="problemPicker.onChangeProblemCheckBox('{%=ID %}');"/> After first check or uncheck nothing happens. Afetr second click, call my function problemPicker.onChangeProblemCheckBox , but i get ID first check. Why? Can help me anybody? onChangeProblemCheckBox: function(id) { if ($('#CheckBox' + id).attr("checked") == true) { problemPicker.addToCheckProblems(id); var checkboxes = $('.jProblemClass:checked'); if ((checkboxes

问题 I've distilled the issue down to this jsfiddle: http://jsfiddle.net/shaggyfrog/DUqYW/3/ On Chrome/Mac and Safari/Mac, you should get the "foo" alert every time you (re)load the page. On Firefox/Mac, the "foo" alert only comes up the first time. Subsequent reloads do not trigger it. This is either: (A) a bug in jQuery on Firefox, where a change handler on a radio input should get called irrespective of its state when it's checked; (B) a different jQuery bug, where the change handler should not

问题 I inserted a onChange trigger into my selection that generated by php. But my final result is not responding on the onChange function which runs perfectly in pure html and javascript format. How can I debug it so that I know the onChange function has been inserted correctly into my select tag? THank You MORE INFO This is what actually looks like <p class="<?php if (get_option('jr_submit_cat_required')!=='yes') : echo 'optional'; endif; ?>"><label for="job_cat"><?php _e('Job Category',

问题 I have a function (getArticleByFamille) in event onchange dopDownList like this: <?= $form->field($modelFamille, 'idFamille')->dropDownList( ArrayHelper::map(Famille::find()->all(), 'idFamille', 'libelle'), [ 'prompt' => 'Sélectionner la Categorie', 'class' => 'chosen-select mb-15', 'onchange' => 'getArticleByFamille(this.value,"vente/devis","' . Yii::$app->getUrlManager()->getBaseUrl() . '","ArticleByFamille")' ] )->label(false); ?> but When I call this function, it not working and when I

问题 <input class="item-quantities valid" data-bomid="1939" data-rid="2054" id="AddedItemIDs_1939_" name="AddedItemIDs[1939]" onkeypress="return isNumberKey(event)" type="text" value="7" aria-invalid="false"> Can't get this to work. What I've tried... $('.item-quantities, .valid').change(function () { alert("we are here"); }); or... $('.item-quantities.valid').change(function () { alert("we are here"); }); or... $('.item-quantities').change(function () { alert("we are here"); }); ... and a few

问题 I'm wondering if there is a way to use a JavaScript onChange event to change the SRC for an image based on a number typed in a textbox on a form. For example, if the user types a number beginning with the number 3, I'd like to SRC to point to one image, but if the user types a number beginning with the number 4, I'd like the SRC to point to a different image, and I'd like other SRC changes when the user types a number beginning with 5, or a number beginning with 6. Thanks in advance! 回答1:

问题 I am working with GXT (2.2.5) and need to get the row index of chenged checkbox on the grid. What i am doing is to create a grid and apply a GridCellRender to show a checkBox in first column, then when any checkBox change their value (listener at the OnChange event), the row index of changed checkbox must be taken. This is a part of my code by the moment: checkColumn.setRenderer(new GridCellRenderer() { @Override public Object render(ModelData model, String property, ColumnData config, int

问题 This question already has answers here : Getting the ID of the element that fired an event (21 answers) Closed 3 years ago . I can't get the .val() of my second input select when I use jquery .on('change' function() I have 2 select elements: <select id="itemsA"> <option selected disabled>Select option</option> <option value="a">Item A</option> <option value="b">Item B</option> <option value="c">Item C</option> <option value="d">Item D</option> </select> <select id="itemsB"> <option selected

问题 I have a portion of a table whose values depend on the value in my dropdownlist. How can I update the the table when the selected option of the dropdownlist changes. grid @foreach (var choice in ViewData.Model.Options where choiceId == ViewData.Model.choiceLevelId) { <tr class='gridrow'> <td>..... dropdown <div class="editor-field"> @Html.DropDownListFor(model => model.choiceLevelId, ( ... 回答1: What table are you talking about? ASP.NET MVC has no knowledge of tables or chairs. It works with