Html 使输入元素 (type="text") 处理多行文本
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Make input element (type="text") handle multiple lines of text
提问by AlanH
I've created a form with an input, but the box only handles text in a single row. I would like to style it so that the input field is similar to that of Twitter's, where the box itself is multiple rows:
我创建了一个带有输入的表单,但该框仅处理一行中的文本。我想对其进行样式设置,以便输入字段类似于 Twitter 的输入字段,其中框本身是多行:
And it also expands when you hit enter:
当您按下 Enter 键时,它也会展开:
This is currently what I have:
这是目前我所拥有的:
<form name="userForm">
<input type="text" id="userInput" name="userInput" placeholder="Enter text here.">
<button type="submit" id="button">Submit</button>
</form>
I've styled the button and the input, but haven't done anything to change its shape, so it's at default. What do I have to tweak to achieve this?
我已经为按钮和输入设置了样式,但没有做任何改变它的形状的事情,所以它是默认的。我必须调整什么才能实现这一目标?
回答by Michael Benjamin
You need to use an HTML <textarea>
element.
您需要使用 HTML<textarea>
元素。
From MDN:
来自 MDN:
The HTML
<textarea>
element represents a multi-line plain-text editing control.
HTML
<textarea>
元素表示多行纯文本编辑控件。
Using <input>
for multiline text is not possible natively and, if hacked, would be invalid HTML.
使用<input>
的多行文字是不可能的本身,如果砍死,将是无效的HTML。
HTML5 spec:
HTML5 规范:
4.10.5.1.2 Text (
type=text
) state and Search state (type=search
)The
input
element represents a one lineplain text edit control for the element's value.(emphasis mine)
4.10.5.1.2 文本 (
type=text
) 状态和搜索状态 (type=search
)该
input
元素代表一行的元素值的纯文本编辑控件。(强调我的)
Twitter input box
推特输入框
You mention you want the textarea to resemble Twitter's (auto-resize / no scrollbar). Consider this option and the following SO posts:
您提到您希望 textarea 类似于 Twitter 的(自动调整大小/无滚动条)。考虑这个选项和以下 SO 帖子:
A small, stand-alone script to automatically adjust textarea height.
一个小的、独立的脚本,用于自动调整 textarea 高度。
回答by Abdul Basit
Use TextArea.Alter rows and columns attribute according to requirement.
根据需要使用 TextArea.Alter 行和列属性。
<textarea class="input" rows="10" cols="10">Some text here</textarea>
To add the hover effect and change the box size , use css. Assign a normal height and width, and change that on focus.
要添加悬停效果并更改框大小,请使用 css。分配正常的高度和宽度,并在焦点上更改。
.input:focus {
height:300px;
}
.input{
width:500px;
height:200px;
}
回答by Fanky
Use <div contenteditable="true">
(supported well) with storing to <input type="hidden">
.
使用<div contenteditable="true">
(支持良好)与存储到<input type="hidden">
.
HTML:
HTML:
<div id="multilineinput" contenteditable="true"></div>
<input type="hidden" id="detailsfield" name="detailsfield">
js (using jQuery):
js(使用jQuery):
$("#multilineinput").on('keyup',function(e) {
$("#detailsfield").val($(this).text()); //store content to input[type=hidden]
});
if anyone wanted to use this for wrapping a single line and using enter to submit or move on in the form, here is what to add:
如果有人想用它来换行并使用回车提交或在表单中继续,这里是要添加的内容:
$("#multilineinput").on('keypress',function(e) {
if(e.which == 13) { //on enter
e.preventDefault(); //disallow newlines
// here comes your code to submit
}
});