}for(varj=0; j<uny.length; j++) {//会循环所有option//如果选择第一个,未选择院校,只需要判断option的value是否等于0//如果等于0:未选择,否则就可以通过if(uny[j].selected) {//找到选中的选项//选中了if(uny[j].value==0) {//错误alert("请选择你就读的大学"); uyFlag=false; }else{//正确u...
楼主看到javascript中写了某个方法这也许是开发者自定义的，也许是框架带的（jquery、ext等），getOptionValue这个方法不是javascript原生的，也就是说，你要在你得代码中看哪里定义了这个方法，都做了什么。我这里只能根据名字猜测一下方法的用处：获取select元素的被选择的值，因为html中option标签只有一种...
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 ...
How to get selected value from select/dropdownlist in javascript, is it the same as getting the value of textbox? It can only be said that there are similarities, and more of them are different; the same is to get their id, and then take the value according to the object; the differe...
areaSelect.addEventListener(`change`,(e) =>{// log(`e.target`, e.target);constselect = e.target;constvalue = select.value;constdesc = select.selectedOptions[0].text;log(`option desc`, desc); }); 2 options <divclass="select-box clearfix"><labelfor="area">Area</label><selectid="...
Till here, we have figured out how to find the selected option using jQuery. Now, to find the value of the option, val() method will be used which will help to get the value of the selected element.Syntax:$(selector).val(); These all methods, when used together will return the ...
Vue.js get dropdown selected value - You can get seelcted text or selected option value of a select box in vue.js using v-model. Here in this tutorial, we are going to explain how you can get selected option value and text in vue.js. You can use our onli
我想使用 javascript 获取下拉栏的默认值。 在下面的代码中 alert(document.getElementById("dropdown").selected) <select id="dropdown"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="vw">VW</option> <option value="audi" selected>Audi</option> </...
e.checked||"option"===t&&!!e.selected},selected:function(e){return e.parentNode&&e.parentNode.selectedIndex,!0===e.selected},empty:function(e){for(e=e.firstChild;e;e=e.nextSibling)if(e.nodeType<6)return!1;return!0},parent:function(e){return!b.pseudos.empty(e)},header:function(e)...
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 selected value. Try to run the above code snippet in any browser that supports jQuery, and it will show the below result. Output: "goa" "mumba...