onchange

How do I implement onchange of <input type=“text”> with jQuery?

由 邮差的信 提交于 2019-11-26 06:59:23
问题 <select> has this API. What about <input> ? 回答1: You can use .change() $('input[name=myInput]').change(function() { ... }); However, this event will only fire when the selector has lost focus, so you will need to click somewhere else to have this work. If that's not quite right for you, you could use some of the other jQuery events like keyup, keydown or keypress - depending on the exact effect you want. 回答2: As @pimvdb said in his comment, Note that change will only fire when the input

Onchange open URL via select - jQuery

由 不打扰是莪最后的温柔 提交于 2019-11-26 06:58:45
问题 What would be the best way to attach an event so on change of a select option a URL. Store the href in an attr and grab it on change? 回答1: It is pretty simple, let's see a working example: <select id="dynamic_select"> <option value="" selected>Pick a Website</option> <option value="http://www.google.com">Google</option> <option value="http://www.youtube.com">YouTube</option> <option value="https://www.gurustop.net">GuruStop.NET</option> </select> <script> $(function(){ // bind change event to

Run change event for select even when same option is reselected

由 不羁岁月 提交于 2019-11-26 05:36:33
问题 Basically, I have drop down menu that looks like this: <select> <option>0</option> <option selected=\"selected\">1</option> <option>2</option> <option>3</option> </select> I am trying to write a function that is fired even when you select the same option, i.e. even if the drop-down is opened and re-select the selected option, I want it to execute the function. 回答1: If you mean selecting with the mouse, you can use mouseup . However, it will fire when the select box is being opened as well, so

jQuery difference between change and click event of checkbox

由 佐手、 提交于 2019-11-26 04:23:37
问题 As title suggests I want to know the difference between the change and click event of checkbox (in jQuery) I have read down the answer to this What the difference between .click and .change on a checkbox But, its not working for me. change fires even when I hit spaces without losing focus. Here\'s a fiddle demo Both seems to be working alike. Am I missing something here ? 回答1: According to the W3C, the onclick event is triggered by the keyboard for accessibility purposes: SCR35: Making

onchange event on input type=range is not triggering in firefox while dragging

由 一笑奈何 提交于 2019-11-26 03:23:25
问题 When i played with <input type=\"range\"> , Firefox triggers an onchange event only if we drop the slider to a new position where Chrome and others triggers onchange events while the slider is dragged. How can i make it happen on dragging in firefox? HTML <span id=\"valBox\"></span> <input type=\"range\" min=\"5\" max=\"10\" step=\"1\" onchange=\"showVal(this.value)\"> SCRIPT function showVal(newVal){ document.getElementById(\"valBox\").innerHTML=newVal; } 回答1: Apparently Chrome and Safari

jQuery - Detect value change on hidden input field

由 丶灬走出姿态 提交于 2019-11-26 02:28:18
问题 I have a hidden text field whose value gets updated via an AJAX response. <input type=\"hidden\" value=\"\" name=\"userid\" id=\"useid\" /> When this value changes, I would like to fire an AJAX request. Can anyone advise on how to detect the change? I have the following code, but do not know how to look for the value: $(\'#userid\').change( function() { alert(\'Change!\'); }) 回答1: So this is way late, but I've discovered an answer, in case it becomes useful to anyone who comes across this

How to pass parameters on onChange of html select

由 杀马特。学长 韩版系。学妹 提交于 2019-11-26 02:06:36
问题 I am a novice at JavaScript and jQuery. I want to show one combobox-A, which is an HTML <select> with its selected id and contents at the other place on onChange(). How can I pass the complete combobox with its select id , and how can I pass other parameters on fire of the onChange event? 回答1: function getComboA(selectObject) { var value = selectObject.value; } <select id="comboA" onchange="getComboA(this)"> <option value="">Select combo</option> <option value="Value1">Text1</option> <option

Counting Chars in EditText Changed Listener

由 前提是你 提交于 2019-11-26 01:48:57
问题 In my project I have an EditText . I want to count the characters in the EditText , and show that number it in a TextView . I have written the following code and it works fine. However, my problem is when I click Backspace it counts up, but I need to decrement the number. How can I consider Backspace ? tv = (TextView)findViewById(R.id.charCounts); textMessage = (EditText)findViewById(R.id.textMessage); textMessage.addTextChangedListener(new TextWatcher(){ public void afterTextChanged(Editable

android on Text Change Listener

由 本小妞迷上赌 提交于 2019-11-26 00:47:10
问题 I have a situation, where there are two fields. field1 and field2 . All I want to do is empty field2 when field1 is changed and vice versa. So at the end only one field has content on it. field1 = (EditText)findViewById(R.id.field1); field2 = (EditText)findViewById(R.id.field2); field1.addTextChangedListener(new TextWatcher() { public void afterTextChanged(Editable s) {} public void beforeTextChanged(CharSequence s, int start, int count, int after) { } public void onTextChanged(CharSequence s

Counting Chars in EditText Changed Listener

由 一世执手 提交于 2019-11-26 00:17:55
In my project I have an EditText . I want to count the characters in the EditText , and show that number it in a TextView . I have written the following code and it works fine. However, my problem is when I click Backspace it counts up, but I need to decrement the number. How can I consider Backspace ? tv = (TextView)findViewById(R.id.charCounts); textMessage = (EditText)findViewById(R.id.textMessage); textMessage.addTextChangedListener(new TextWatcher(){ public void afterTextChanged(Editable s) { i++; tv.setText(String.valueOf(i) + " / " + String.valueOf(charCounts)); } public void
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