How to set default value for HTML select?

This question already has an answer here: How can I set the default value for an HTML <select> element? 18 answers $(function() { var temp="a"; $("#MySelect").val(temp); }); <select name="MySelect" id="MySelect"> <option value="a">a</option> <option value="b">b</option> <option value="c">c</option> </select> You firs

如何设置HTML选择的默认值?

这个问题在这里已经有了答案: 我如何设置HTML <select>元素的默认值? 18个答案 $(function() { var temp="a"; $("#MySelect").val(temp); }); <select name="MySelect" id="MySelect"> <option value="a">a</option> <option value="b">b</option> <option value="c">c</option> </select> 您首先需要将值添加到select选项中,并且为了轻松

Adding custom attributes to HTML tags

I have been using data attributes to add custom attributes in HTML. Unfortunately data is not supported in older browsers. As an alternative, what is the disadvantage of creating custom attributes in HTML? As an example I created carType = 'nissa' as an attribute in HTML, and I was able to parse it with javascript utilizing element.getAttribute(attributename) It seems to work in ev

将自定义属性添加到HTML标记

我一直在使用数据属性来添加HTML中的自定义属性。 不幸的是,旧版浏览器不支持数据。 作为替代,在HTML中创建自定义属性的缺点是什么? 作为一个例子,我创建了carType = 'nissa'作为HTML中的一个属性,并且我能够使用element.getAttribute(attributename) 它似乎适用于我测试过的每个浏览器。 这个工作流程的负面影响是什么? 即使在较旧的浏览器中也支持data-属性。 (见注) 你可以简单地使用你描述的方

Jquery custom attributes

I'm thinking about using custom attributes in Jquery to avoid using class or id attributes, to not interfere with the html designers. Taking into account this idea, the html should be pieces like: <ul Jquery="CommonUl"> <li Jquery="CommonLi"></li> <li Jquery="CommonLi"></li> <li Jquery="CommonLi"></li> <li Jquery="CommonLi"&

Jquery自定义属性

我在考虑在Jquery中使用自定义属性来避免使用类或id属性,以免干扰html设计者。 考虑到这个想法,html应该是这样的: <ul Jquery="CommonUl"> <li Jquery="CommonLi"></li> <li Jquery="CommonLi"></li> <li Jquery="CommonLi"></li> <li Jquery="CommonLi"></li> <li Jquery="CommonLi"></li> </ul> 你认为这是一个好方

Adding value to hidden input tag and submitting to form

I have a test page that displays my POST data. I am trying to view the post that I just submitted but I am unable to see the added payload I added in my form. HTML: <form id="test-form" action="/test/" method="post"> {# pass data to /test/ URL #} <div class="test-button-set"> <button type="button" id="hdfs-test" class="btn btn-default btn-lg selected">HDFS</bu

为隐藏的输入标签添加值并提交表单

我有一个显示我的POST数据的测试页面。 我正在尝试查看刚刚提交的帖子,但无法看到我在表单中添加的payload 。 HTML: <form id="test-form" action="/test/" method="post"> {# pass data to /test/ URL #} <div class="test-button-set"> <button type="button" id="hdfs-test" class="btn btn-default btn-lg selected">HDFS</button> <button type="button" id="hive-test"

Form validation using JavaScript always true

Added some more text because stackoverflow says there's too much code HTML <form name="contact"> <fieldset> <label class="labelone" for="naam">Naam:</label> <input name="naam"> <label for="email">Email:</label> <input name="email"> <label for="boodschap">Boodschap:</label> <te

使用JavaScript进行表单验证总是如此

添加了一些更多的文本,因为stackoverflow说有太多的代码 HTML <form name="contact"> <fieldset> <label class="labelone" for="naam">Naam:</label> <input name="naam"> <label for="email">Email:</label> <input name="email"> <label for="boodschap">Boodschap:</label> <textarea name="boodsch

get value of input using javascript

I am trying to get value of input using js but it doesn't work. Where is my mistake? Alert doesn't work. <body> <form name="inputform" id="form1" action="html_form_action.asp" method="get" style="visibility:hidden"> Email: <input type="text" name="email" ></input> <input type="button" value="Gönder" onclick="CreateU()"></input> <

使用javascript获取输入的值

我正在尝试使用js来获取输入的值,但它不起作用。 我的错误在哪里? 警报不起作用。 <body> <form name="inputform" id="form1" action="html_form_action.asp" method="get" style="visibility:hidden"> Email: <input type="text" name="email" ></input> <input type="button" value="Gönder" onclick="CreateU()"></input> </form> </body> js文件

Can't access global variables (Javascript)

var hours = document.getElementById("hrs").value; // Global variables declared var mins = document.getElementById("min").value; var seconds = document.getElementById("sec").value; function random() { alert(hours); alert(mins); alert(seconds); } 输出结果在所有3种情况下都undefined 。 This particular code might be within the body of the HTML file and this code is executed before the p

无法访问全局变量(Javascript)

var hours = document.getElementById("hrs").value; // Global variables declared var mins = document.getElementById("min").value; var seconds = document.getElementById("sec").value; function random() { alert(hours); alert(mins); alert(seconds); } 输出结果在所有3种情况下都undefined 。 这个特定的代码可能在HTML文件的主体内,并且在创建特定的HTML元素之前执行此代码。 所以, undefined的值

AngularJS code not working on chrome on localhost in a folder

I am running simple hello world program (using AngularJS 1.6) from localhost on my ubuntu 17.04, localhost address is http://localhost/js/angular/4/ and the program is not working in Google Chrome, the same code runs all fine on Firefox, and if I rename the same folder to another number or if I keep the same code in another folder, it seems to be working all fine. What could be the reason of thi

AngularJS代码无法在文件夹中的本地主机上使用chrome

我在我的ubuntu 17.04上运行简单的Hello World程序(使用AngularJS 1.6)从本地主机上运行,​​本地主机地址是http://localhost/js/angular/4/并且该程序在谷歌浏览器中不工作,相同的代码运行良好在Firefox上,如果我将相同的文件夹重命名为另一个数字,或者如果我将相同的代码保存在另一个文件夹中,它似乎工作得很好。 可能是这种奇怪行为的原因,因为在搜索解决方案时,我无法在Internet上找到与此类似的任何内容。 var app

How to accommodate huge URL in Internet explorer?

I was working with google maps. And I was sending data(latitude & longitude along with their addresses) to iframe through URL. The whole size of the url can be 20-30K long characters in my case. Now it's working fine in Chrome as it supports 64K characters. But It's creating problem for internet explorer as it supports only 2083 characters. Do you have any idea how to overcome

如何在Internet Explorer中容纳巨大的URL?

我正在使用谷歌地图。 我通过URL向iframe发送数据(经纬度及其地址)。 在我的情况下,url的整个大小可以是20-30K长的字符。 现在它在Chrome中运行良好,因为它支持64K字符。 但它为Internet Explorer创建问题,因为它只支持2083个字符。 你有什么想法如何克服这个问题? 我们可以压缩URL字符串,然后在iframe中解压缩它吗? 要么 有没有其他可行的方法将数据传递给iframe?

Get div id inside another div id with JavaScript

Edited to explain page loading My HTML page has a div inside another div, both referenced by id, and both unique throughout the document. <head> <script type="text/javascript" src="myscript.js"></script> </head> ... <body onload=display()> <div id="rightwork"> <div id="mychart" > </div> </div> ... My JavaScript is meant to write something

使用JavaScript获取另一个div ID内的div ID

编辑解释页面加载 我的HTML页面在另一个div中有一个div,都由id引用,并且在整个文档中都是唯一的。 <head> <script type="text/javascript" src="myscript.js"></script> </head> ... <body onload=display()> <div id="rightwork"> <div id="mychart" > </div> </div> ... 我的JavaScript是为了写'mychart'div内的东西,但我无法设法引用它:( 这个问题与