onchange

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

南笙酒味 提交于 2019-11-26 18:21:47
<select> has this API. What about <input> ? Greg 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. iPadDeveloper2011 As @pimvdb said in his comment, Note that change will only fire when the input element has lost focus. There is also the input event which fires whenever the textbox updates

Run change event for select even when same option is reselected

烂漫一生 提交于 2019-11-26 17:49:50
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. 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 you'll need to keep track of the amount of times it was fired (even: select is being opened, odd: select is

jQuery difference between change and click event of checkbox

纵饮孤独 提交于 2019-11-26 15:23:05
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 ? jackwanders According to the W3C, the onclick event is triggered by the keyboard for accessibility purposes: SCR35: Making actions keyboard accessible by using the onclick event of anchors and buttons In order to provide a

jQuery change method on input type=“file”

二次信任 提交于 2019-11-26 12:57:34
问题 I\'m trying to embrace jQuery 100% with it\'s simple and elegant API but I\'ve run into an inconsistency between the API and straight-up HTML that I can\'t quite figure out. I have an AJAX file uploader script (which functions correctly) that I want to run each time the file input value changes. Here\'s my working code: <input type=\"file\" size=\"45\" name=\"imageFile\" id=\"imageFile\" onchange=\"uploadFile()\"> When I convert the onchange event to a jQuery implementation: $(\'#imageFile\')

Controlled vs uncontrolled components ReactJs

Deadly 提交于 2019-11-26 11:36:31
问题 Almost in every ReactJS tutorial or even in the official documentation for handling input changes, onChange is recommended. We use a state for the value and change it via onChange. This triggers the render in every key stroke. So, Is rendering really that cheap? Is input value not being held in DOM? So there is no difference between the DOM and VirtualDOM, so although the rendering happens nothing changes? (Wrong assumption probably). Just for fun and learning purposes I tried those: Used a

Call Javascript onchange event by programmatically changing textbox value

家住魔仙堡 提交于 2019-11-26 11:18:03
问题 the problem I\'m facing is this: I have a textbox for a date range along side a calendar control. When the user selects a date from the calendar, it fills that date into the textbox When this happens I want to fire a javascript function, however, the \'onchange\' event doesn\'t seem to happen. I\'d ideally like to be able to add the event as an attribute to the textbox, something like: txtCreateDate.Attributes.Add(\"onchange\", string.Format(\"JSfunction({0},\'{1}\');\", arg1, arg2)); more

How to pass parameters on onChange of html select

微笑、不失礼 提交于 2019-11-26 11:11:31
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? Piyush Mattoo function getComboA(selectObject) { var value = selectObject.value; } <select id="comboA" onchange="getComboA(this)"> <option value="">Select combo</option> <option value="Value1">Text1</option> <option value="Value2">Text2</option> <option value="Value3">Text3</option> </select> The above

Dropdown using javascript onchange

女生的网名这么多〃 提交于 2019-11-26 09:41:49
问题 I have a simple drop down and I want to have it so that if the user selects Have a Baby the message changes to Have a Baby, but for any other selection. The message stays the same (nothing), but this isn\'t working. Can someone please help. Please play with my jsfiddle. http://jsfiddle.net/Z9YJR/ Here is the html <select id=\"leave\"> <option value=\"5\">Get Married</option> <option onchange=\"changeMessage()\" value=\"100\">Have a Baby</option> <option value=\"90\">Adopt a Child</option>

Redirect on select option in select box

被刻印的时光 ゝ 提交于 2019-11-26 09:33:52
问题 At the moment I am using this: <select ONCHANGE=\"location = this.options[this.selectedIndex].value;\"> it redirect me on the location inside of the option value. But it doesn\'t work as expected .. mean that if I click on the first option of the select, then onChange action not running. I was thinking about javascript, but I think you\'ll have some better suggestions guys. So how can I make it work if I click on each option it\'ll redirect me to the it\'s value? 回答1: Because the first option

Trigger change() event when setting <select>&#39;s value with val() function

懵懂的女人 提交于 2019-11-26 08:05:04
问题 What is the easiest and best way to trigger change event when setting the value of select element. I\'ve expected that executing the following code $(\'select#some\').val(10); or $(\'select#some\').attr(\'value\', 10); would result in triggering the change event, which i think is pretty logic thing to be done. Right? Well, it isn\'t the case. You need to triger change() event by doing this $(\'select#some\').val(10).change(); or $(\'select#some\').val(10).trigger(\'change\'); but i\'m looking