onchange

问题 I have this code for a select box which is being displayed by the Chosen jQuery plugin. What I am trying to achieve is to get the value from the current item that has been selected: <div> <select id="schedule_event" name="schedule[event]" style="display: none; " class="chzn-done"><option value="Game" selected="selected">Game</option> <option value="Event">Event</option> <option value="Training">Training</option> </select> <div id="schedule_event_chzn" class="chzn-container chzn-container

问题 I have a text field from which I am calling a function on onChange event. I am throwing a confirm window here when the value in that textfield is changed. If cancel is clicked( in confirm window), the old value must get set back into the text field. If proceed or ok is clicked, the new value should be retained. I have been trying this for a long time but am unable to retain the old value. Eg: Before onchange, val in text field ='first'; onChange event, val changed to 'second', confirm window

问题 My change function allows users to switch from country to country and get different text and features. It works when changing country selections. But at initial page load, it does not fire jQuery change to set the hide and show text divs for the default / initial country. Both divs display at initial page load. When I change away and then back to the default/initial country, change fires, hide and show fire, and shows the proper information and features. I have tried document.ready with a

问题 been working on this way too long...but can't seem to identify the problem. Already read dozens of articles on stackoverflow and elsewhere. when I click and change the value, it doesn't auto-submit: <form id="orderbyfrm" name="orderbyfrm" action="http://staging.whiterabbitexpress.com/" method="post" class="orderbyfrm"> <input name="s" value="<?php echo $wre_search_txt?>" type="hidden"> <label for="orderby" class="sortByLabel">Sort by </label> <select class="sortByDropdown" name="orderby" id=

问题 been working on this way too long...but can't seem to identify the problem. Already read dozens of articles on stackoverflow and elsewhere. when I click and change the value, it doesn't auto-submit: <form id="orderbyfrm" name="orderbyfrm" action="http://staging.whiterabbitexpress.com/" method="post" class="orderbyfrm"> <input name="s" value="<?php echo $wre_search_txt?>" type="hidden"> <label for="orderby" class="sortByLabel">Sort by </label> <select class="sortByDropdown" name="orderby" id=

问题 I want to execute javascript that's in the "onchange" attribute of an html element. So.. <input id="el" type="text" onchange="alert('test');" value="" /> Using that example I'd like to execute the al ert('test'); portion via jQuery, the problem is the .change() event handler isn't working, because I want to execute it after another element changes it's value. So.. $('#el').val('test'); This is when I'd like to execute the onchange. After that .val val has been called. Any ideas? 回答1: .val()

问题 When this onchange event in IE returns false, IE focus stays on that input box. In Firefox the focus always moves to the next field regardless. HTML: input name="seminar_donation" type="text" id="seminar_donation" onchange="return CheckTotal(this);" JavaScript: function CheckTotal(inputbox) { if (isNaN(parseInt(inputbox.value))) { alert("Please enter only digits 0-9"); inputbox.focus(); return false; } return true; } In IE I don't even need the inputbox.focus() which unfortunately does not

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . I have an html form with Sub-Total, Discount and Total. The select drop down for Discount has 5%, 10% and 20% values. The select drop down for Sub-Total has $200, $100 and $20 values. Another input text field gets the Total form a calculation on the Sub-Total and Discount.

问题 Need form to change it's action depending on the selection from a specific drop down menu. On change should trigger the script and change the action before user submits. Easier said than done when you're new to JS.. thanks for any help! Javascript: <script type="application/javascript"> function chgAction(form1){ if( recipient=="jordachedotcom_Advertising" ) {document.form1.action = "/adv_contact.php";} else if( recipient=="dept_Public_Relations" ) {document.form1.action = "/pr_contact.php";}

问题 I have a child component that contains complex input (some chart data). I am sending this chart data from the parent component through the @Input() decorator in Angular 5 after getting API response. So, I need to sync the chart according with the API response every time it gets changed on the parent component, hence, the OnChange Lifecyle. But unfortunately, I am not able to get this to work properly. I tried with setting a dummy input field with basic number type and increment it but in vain