我有一些试图封装在网页上的控件。我尝试过几种封装控件的方法,但都没有成功。我尝试使用div,但效果不太好,我也尝试了以下帖子:
Create a group box around certain controls on a web form using CSS
正在发生的事情是正在创建一个框,但它位于我的网页顶部,而不是控件周围。
我想创建一个类似于此网页上的灰色框:
https://img.labnol.org/di/trigger1.png
下面,我附上了我用来创建表单的CSS和HTML代码的副本。该表单是我通过示例调整的简单文件上传表单。我正在自己的个人网站上使用它。
这是HTML:
<!DOCTYPE html>
<html>
<head>
<script>
/* Script written by Adam Khoury @ DevelopPHP.com */
/* Video Tutorial: http://www.youtube.com/watch?v=EraNFJiY0Eg */
function _(el){
return document.getElementById(el);
}
function uploadFile(){
var file = _("file1").files[0];
// alert(file.name+" | "+file.size+" | "+file.type);
var formdata = new FormData();
formdata.append("file1", file);
var ajax = new XMLHttpRequest();
ajax.upload.addEventListener("progress", progressHandler, false);
ajax.addEventListener("load", completeHandler, false);
ajax.addEventListener("error", errorHandler, false);
ajax.addEventListener("abort", abortHandler, false);
ajax.open("POST", "file_upload_parser.php");
ajax.send(formdata);
}
function progressHandler(event){
//_("loaded_n_total").innerHTML = "Uploaded "+event.loaded+" bytes of "+event.total;
var percent = (event.loaded / event.total) * 100;
_("progressBar").value = Math.round(percent);
_("status").innerHTML = Math.round(percent)+"% uploaded... please wait";
}
function completeHandler(event){
_("status").innerHTML = event.target.responseText;
_("progressBar").value = 0;
document.getElementById('p1').innerHTML = "Drag your file here or click in this area.";
}
function errorHandler(event){
_("status").innerHTML = "Upload Failed";
}
function abortHandler(event){
_("status").innerHTML = "Upload Aborted";
}
function changeText()
{
document.getElementById('p1').innerHTML = "1 file selected";
}
</script>
<link rel="stylesheet" href="test.css">
</head>
<body>
<h2>Upload</h2>
<fieldset>
<legend>Group 1</legend>
<form id="upload_form" enctype="multipart/form-data" method="post">
<input type="file" name="file1" id="file1"><br>
<p id="p1">Drag your file here or click in this area.</p>
<input type="button" value="Upload File" onclick="uploadFile()">
<progress id="progressBar" value="0" max="100" style="width:508px; margin-left: -4px; margin-top: 10px;"></progress>
<h3 id="status"></h3>
<p id="loaded_n_total"></p>
</form>
</fieldset>
<script>
// self executing function here
(function() {
document.getElementById('upload_form')[0].onchange = changeText;
})();
</script>
</body>
</html>
这是CSS(在html中称为test.css):
body{
background: rgba(0,0,0,0.0);
}
form{
position: absolute;
top: 50%;
left: 50%;
margin-top: -100px;
margin-left: -250px;
width: 500px;
height: 200px;
border: 4px dashed #0D0D0D;
}
form p{
width: 100%;
height: 100%;
text-align: center;
line-height: 140px;
color: #0D0D0D;
font-family: Arial;
}
h2{
text-align: center;
}
form input[type="file"]{
position: absolute;
margin: 0;
padding: 0;
width: 100%;
height: 100%;
outline: none;
opacity: 0;
}
form input[type="button"]{
margin: 0;
color: #fff;
background: #16a085;
border: none;
width: 508px;
height: 35px;
margin-top: -20px;
margin-left: -4px;
border-radius: 4px;
border-bottom: 4px solid #117A60;
transition: all .2s ease;
outline: none;
}
form input[type="button"]:hover{
background: #149174;
color: #0C5645;
}
form input[type="button"]:active{
border:0;
}
form progressBar{
text-align: center;
}
回到HTML,fieldset标记放置在我尝试封装的控件周围。我把它们留在那里,以便任何人都可以看到我遇到的主要问题。
很抱歉,但是我对Web编程非常陌生。任何帮助将不胜感激,谢谢。
注意:创建盒子的方式对我来说并不重要。我希望该框是用HTML创建的,然后可以使用CSS对其进行样式设置。
答案 0 :(得分:1)
HTML的结构很好,但是CSS中的position: absolute
属性与字段集冲突。
由于<fieldset>
包装了所有控件,因此我建议给它固定的width
和height
并根据其定位子元素,即使用width: 100%
您的孩子,并给他们所有相同的边距,以便他们很好地对齐。另外,请确保您在标记中编辑#progressBar
样式。
以下是我刚才提到的更改的摘要:
body {
background: rgba(0, 0, 0, 0.0);
}
fieldset {
width: 508px;
height: 270px;
/* fixed width and height*/
margin: 13vh auto;
}
#p1 {
border: 4px dashed #0D0D0D;
/* modified the actual text box instead of the entire form */
width: 508px;
height: 140px;
line-height: 140px;
margin-top: 0px;
}
form p {
text-align: center;
color: #0D0D0D;
font-family: Arial;
}
h2 {
text-align: center;
}
form input[type="file"] {
position: absolute;
margin: 0;
outline: none;
width: 508px;
height: 140px;
margin: 22px 4px;
opacity: 1;
background-color: orange;
/* Last two properties are a visual representation. Delete background-color and set opacity to 0 */
}
form input[type="button"] {
margin: 0;
color: #fff;
background: #16a085;
border: none;
width: 100%;
/* width relative to parent fieldset */
height: 35px;
margin-top: -20px;
border-radius: 4px;
border-bottom: 4px solid #117A60;
transition: all .2s ease;
outline: none;
}
form input[type="button"]:hover {
background: #149174;
color: #0C5645;
}
form input[type="button"]:active {
border: 0;
}
form progressBar {
text-align: center;
}
<!DOCTYPE html>
<html>
<head>
<script>
/* Script written by Adam Khoury @ DevelopPHP.com */
/* Video Tutorial: http://www.youtube.com/watch?v=EraNFJiY0Eg */
function _(el) {
return document.getElementById(el);
}
function uploadFile() {
var file = _("file1").files[0];
// alert(file.name+" | "+file.size+" | "+file.type);
var formdata = new FormData();
formdata.append("file1", file);
var ajax = new XMLHttpRequest();
ajax.upload.addEventListener("progress", progressHandler, false);
ajax.addEventListener("load", completeHandler, false);
ajax.addEventListener("error", errorHandler, false);
ajax.addEventListener("abort", abortHandler, false);
ajax.open("POST", "file_upload_parser.php");
ajax.send(formdata);
}
function progressHandler(event) {
//_("loaded_n_total").innerHTML = "Uploaded "+event.loaded+" bytes of "+event.total;
var percent = (event.loaded / event.total) * 100;
_("progressBar").value = Math.round(percent);
_("status").innerHTML = Math.round(percent) + "% uploaded... please wait";
}
function completeHandler(event) {
_("status").innerHTML = event.target.responseText;
_("progressBar").value = 0;
document.getElementById('p1').innerHTML = "Drag your file here or click in this area.";
}
function errorHandler(event) {
_("status").innerHTML = "Upload Failed";
}
function abortHandler(event) {
_("status").innerHTML = "Upload Aborted";
}
function changeText() {
document.getElementById('p1').innerHTML = "1 file selected";
}
</script>
<link rel="stylesheet" href="test.css">
</head>
<body>
<h2>Upload</h2>
<fieldset>
<legend>Group 1</legend>
<form id="upload_form" enctype="multipart/form-data" method="post">
<input type="file" name="file1" id="file1"><br>
<p id="p1">Drag your file here or click in this area.</p>
<input type="button" value="Upload File" onclick="uploadFile()">
<!-- changed progressBar style -->
<progress id="progressBar" value="0" max="100" style="width:100%; margin-top: 10px;"></progress>
<h3 id="status"></h3>
<p id="loaded_n_total"></p>
</form>
</fieldset>
<script>
// self executing function here
(function() {
document.getElementById('upload_form')[0].onchange = changeText;
})();
</script>
</body>
</html>
希望有帮助!