onchange

This question already has answers here : Closed 5 years ago . Call php function from JavaScript (4 answers) How can i call a php function from onchange on an html form textbox? I have tried <input onchange="phpfunction()" ..... > <?php function phpfunction() { my function } ?> Any Help? I Can't seem to figure it out. Thank You You have to do an ajax call and post that your PHP. Example: HTML: <input name="blah" onchange="mainInfo(this.value);"> Javascript Function (AjaX) function mainInfo(id) { $.ajax({ type: "GET", url: "dummy.php", data: "mainid =" + id, success: function(result) { $("

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 opens, if ok selected text field should have second and if cancel is selected 'first' should be present

I have a form with a couple of selects inside. I'm applying the select2 jquery plugin over those selects like this: $("select.company_select, select.positions_select").select2(); The select's work fine, but I have this code to autosubmit my form (I have the autosubmit class on the form tag). var currentData; $('.autosubmit input, .autosubmit select, .autosubmit textarea').live('focus', function () { currentData = $(this).val(); }); $('.autosubmit input, .autosubmit select, .autosubmit textarea').live('change', function () { console.log('autosubmiting...'); var $this = $(this); if (!currentData

What I'm trying to do: I am trying to pass a string from a child component to the handleChange function of a parent component. What currently works: I have a parent React JS class with the following method: handleChange(event) { console.log(event.target.value); } In the render function I have the following: <Child handleChange={this.handleChange.bind(this)} /> In the Child class I have: <fieldset onChange={this.props.handleChange}> <div>Tag 1: <input id="tag1" value={tags[0]} /></div> <div>Tag 2: <input id="tag2" value={tags[1]} /></div> <div>Tag 3: <input id="tag3" value={tags[2]} /></div> <

I am quite new to React and after going through some tutorials, I was trying below code of mine. I made one component, passed props to it from a store, on componentWillMount I make a new state for component. Rendering is fine till now. Next I bound my state to value of an input box and I have onChange listener as well. Still, I can't change my values in the field. Since, I am from Angular background, I am assuming binding input's value to state like below will automatically update the property name in state object. Am I wrong here ?? componentWillMount(){ this.setState({ updatable : false,

I'm using the p:ajax listener to handle value change events (because valueChangeListener is launched on form submit): <p:ajax event="change" listener="#{bean.onNameChanged}"/> Handle method: public void onNameChanged(final AjaxBehaviorEvent event) The problem is, I can't find in AjaxBehaviorEvent nor its class hierarchy the place to read the old value of the input. Neither could I find hint in google, how to get the old value... How to access the old value in the p:ajax onChange event? The problem is, I can't find in AjaxBehaviorEvent nor its class hierarchy the place to read the old value of

问题说明 在含有搜索框的网页中，经常需要及时匹配搜索项，因此需要监听input输入框的变化事件。如果使用 onkeydown、onkeypress、onkeyup 这个几个键盘事件来监测的话，除了监听不了右键的复制、剪贴和粘贴这些操作以外，在输入中文的拼音时同样触发，增加请求数不说还浪费流量。 解决方案 本文结合标准的oninput 和 IE 专属事件 onpropertychange 事件来监听输入框值变化。oninput 是 HTML5 的标准事件，对于检测 textarea, input:text, input:password 和 input:search 这几个元素通过用户界面发生的内容变化非常有用，在内容修改后立即被触发，不像 onchange 事件需要失去焦点才触发。 代码实现 $().ready(function(){ //页面加载完毕绑定输入框的oninput事件 var bind_name='input'; if(navigator.userAgent.indexOf("MSIE")!=-1) { bind_name='propertychange'; } $('input').on(bind_name, function() { do something... }); }); 参考链接： http://www.runoob.com/jsref/event