textarea | 易学教程

jQuery: textarea default value disppear on click

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问题 I want a textarea with some default text. When the user clicks in the textarea the default text should be deleted. How can I make value of a textarea disappear on click? I want it exactly like this, http://www.webune.com/forums/20101025cgtc.html But I wish it made in jQuery. <textarea id="textarea">This should be removed..</textarea> 回答1: I use this as its a bit more generic - it will clear out the element's value on focus, but return the element's value to the default value if empty. $("

Get current word on caret position

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How can I get a word in textarrea by its current caret position? I tried something like this, however this returns just the words first letter upto the character at caret position. For example: if the cursor is between fo and o it returns fo and not foo as excpected. Fo | o bar is not equal to bar foo. => Fo expects Foo Foo bar is not equ | al to bar foo. => equ expects equal . Here's what I've done so far: function getCaretPosition(ctrl) { var start, end; if (ctrl.setSelectionRange) { start = ctrl.selectionStart; end = ctrl.selectionEnd; } else if (document.selection && document.selection

如何在 <textarea> hello （换行）world </textarea> 中实现换行

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我终于搜到了靠谱的我需要的答案： https://blog.csdn.net/qq_16371909/article/details/79697780 \n 不行 <br> 不行用 ASCII设备控制代码 https://www.w3school.com.cn/tags/html_ref_ascii.asp 中的  ASCII设备控制代码最初被设计为用来控制诸如打印机和磁带驱动器之类的硬件设备。在HTML文档中这些代码不会起任何作用（也不全是这样，写在html中还是会有一些符号的）。用在 textarea 中：写在 html 中：想用 textarea 做简易的编辑器，但是在编辑修改时，从服务器返回的数据在 textarea 中没有正常换行，而是把 <br> \n 原模原样的显示出来了，这这这，显然不是我想要的。既然空格可以用   来表示（且在 textarea 中是生效的），那回车是不是可以？是！可惜，翻完了所有的字符相关的文档，就是没有注意到这个词 carriage return，令人捉急的眼神，它就是换行啊！！！！来源： https://www.cnblogs.com/yier0705/p/11848024.html

ReactJS component not rendering textarea with state variable

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问题 I am facing an intriguing bug in React. I have this component: 'use strict'; import SummaryStore from '../stores/SummaryStore'; import React from 'react'; export default class ChangeSummaryForm extends React.Component { constructor() { // store initialisation SummaryStore.register(); var vRating = SummaryStore.getBookForSummaryPrint().summaryRating; var vStarClassName = this.getRatingClasses(vRating); this.state = { sStarClassName: vStarClassName, sCurrentBookToShow: SummaryStore

CKeditor with multible dynamic textareas

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问题 I have a forms which allows multiple steps to be submitted. When a user clicks "add step" another textarea appears. I am using CKeditor. It works great of the first iteration, but on all subsequent ones, it shows a standard text area. Here is my code: <form method="post" action="process_project.php"> <b>Steps for your project:</b> <div> </div> Step 1 <div id="divWho"> <textarea name="projSteps[]" class="steps" id="1" rows="10" cols="60"></textarea> </div> <div> </div> <input type="button"

MySQL insert from a textarea to multiple rows

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问题 I have a simple form which is a textarea and I need to insert each lines in my textarea into a different rows in MySQL. HTML code: <html> <form method="POST" action="insert.php"> <textarea name="url" rows="10" ></textarea> <input type="submit" name="submit" value="Enter"> </form> </html> PHP Code: <?php $link = mysql_connect('localhost', 'root', ''); if (!$link) { die('Not connected : ' . mysql_error()); } $db_selected = mysql_select_db('insert', $link); if (!$db_selected) { die ('Can\'t use

Textarea content is not included in $_POST array sometimes, but is at other times.

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问题 I have been developing my own CMS for my own website. Just to test out PHP. Anyway, everything was working fine and then all of a sudden I had this problem entering content for articles. I am using the JQuery markItUp plugin for text editing purposes. It was working and then all of a sudden the main article wouldn't enter into the database. Here is the form : <form action="" method="post" name="action"> <tr> <td><label for="title" >Article Title </label></td> <td><input type="text" name=

HTML 5 中的textarea标签

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目录 HTML 5 中的textarea标签定义和用法例子属性全局属性事件属性 HTML 5 中的textarea标签定义和用法定义一个文本区域 (text-area) （一个多行的文本输入区域）。用户可在此文本区域中写文本。在一个文本区中，您可输入无限数量的文本。文本区中的默认字体是等宽字体 (fixed pitch)。例子 <textarea rows="3" cols="30"> 这里是文本域中的文本 ... ... ... ... </textarea> 属性全局属性标签支持 HTML 5 中的全局属性。事件属性标签支持 HTML 5 中的事件属性。来源： https://www.cnblogs.com/TMesh/p/11832815.html

Is it possible to work out where in a p's text a mouse click event occurred?

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I have a <p> containing text. When the <p> is clicked on, I create a <textarea> containing the text from the <p> . Is it possible to calculate where in the <p> 's text the click occurred, and move the <textarea> 's cursor to that same point? I don't believe so, no. The DOM just knows what containing element received the click event, it doesn't distinguish between pieces of text within the containing element unless they are elements themselves. And I doubt you want to wrap every character in your text with its own element tag :) Hope this simple example helps: <html> <head/> <body> <script type

How to disable a text area?

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How to disable a textarea which is dynamically added to the HTML? HTML: <div class="ss_datesel_inp_cont"> <div class="ss_datesel_inp_right_corner"> </div> <input autocomplete="off"> </div> This is what I tried: $('.ss_datesel_inp_cont:textarea').prop("disabled", true); $('.ss_datesel_inp_cont:input').prop("disabled", true); I don't see a textarea element in the code you posted? Based on the markup you have, you would disable the input by: $('.ss_datesel_inp_cont input').prop('disabled', true); The reason your code isn't working is simply because the selector is wrong. The input is a descendant