log(this.value); }); In the above example, we have defined the 2 select options. The event handler can be bound to the select box. When the user selects an option, jQuery will detect that change and the change function is fired. After an event is fired, it will return the ...
通过Jquery中的change函数可以用来检测option中修改后的值; 直接使用JavaScript中的onchange在对改变后的值进行用$(this)取值好像有点问题!! <select name="" id="" style="padding-right: 45px;" class="change-device-group"><option value="1">name/option> </select> <script>$('.change-device-group'...
Let’s explore some of the best ways to get Selected Value and Option Text inJavaScriptandjQuery JavaScript Method: Method to getSelected Valuefrom a select box: HTML <select id="singleSelectValueDDJS" class="form-control" onchange="singleSelectChangeValue()"> <option value="0">Select Value ...
<optionvalue="5">Prof</option> </select> If you wanted to get the string "Mr" if the first option was selected (instead of just "1") you would do that in the following way: 1 2 $("#myselect option:selected").text();
$("#quote").load("ajaxTest.php?name="+$("#bTrade").val()); //jqueryajax中load()函数 }); }); </script> <select name="bTrade" id="bTrade"> <option value="a">a</option> <option value="b">b</option> </select>
alert( $('#example option').length ) Clear the existing options in a select with jQuery To clear all the options from the select use jQuery’s remove() function: $('#example option').remove() Adding new options and getting the currently selected value...
The.get()method grants access to the DOM nodes underlying each jQuery object. If the value ofindexis out of bounds — less than the negative number of elements or equal to or greater than the number of elements — it returnsundefined. Consider a simple unordered list: ...
$("#city").append("<option>--Select--</option>"); $(arr).each(function(i) { //to list cities $("#city").append("<option value="" + arr[i].value + "">" + arr[i].display + "</option>") }); } }); Copy CSS File:select_jquery.css ...
You can use the jQuery val() method to get or set the value of a <textarea> element. Be sure to remove any trailing and leading whitespace, otherwise it may cause unexpected results.The following example will get the value from the textarea and show you in an alert dialog box on ...
text += cssObjProp +" = "+ cssObj.getPropertyValue(cssObjProp) +"<br>"; } Try it Yourself » Get computed font size of the first letter in an element (using pseudo-element): constelement = document.getElementById("test");constcssObj = window.getComputedStyle(element,":first-letter...