textarea | 易学教程

How can i create a textarea that has read and write lines using gtk

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问题 Any one know how i can create a text area which displays lines of text which can not be edited but allows you to edit the bottom most line for text. basically in a similar fashion to embedded consoles inside applications that allow you to run code direct on the application. currently using a textview i can go and edit the code above and the output response are also editable. 回答1: It's possible using a GtkTextView , but not trivial. You have to create a tag that makes the text uneditable, and

JavaFX TextArea with listener gives: “java.lang.IllegalArgumentException: The start must be <= the end”

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问题 I am getting the exception when trying to change text in the text property listener. The exception is exactly the same is this question. I used TextArea instead of TextField, but I think the source of the bug is the same. It's in the "TextInputControl.java". It seems to be Java 8's bug. @FXML private TextArea ta; ta.setText("12-"); // pre-set text ta.textProperty().addListener((observable, oldValue, newValue) -> { ta.setText("1"); // changed text }); This causes the exception on my machine. I

Append selected list elements into textarea, add own text

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问题 On the basis of this post : Angularjs select elements from list and display in textarea I would like to add functionality : Fill textarea on the basis of chosen elements from the list. Add additional text inserted by user -> when user decides that he/she wants to add element from the list (some data is written in textarea), select element from the list and "append" to existing text instead of "clear" all textarea and insert values from the list Could you be so kind and explain me how should I

Allow HTML in TextArea

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问题 I'm building a custom options panel in Wordpress. One of the options I'd like to offer is the ability to add text and html to the footer. I can enter simple tags like, bold - but when you add a URL crazy stuff happens. I did some googling and found "stripslashes", alas that doesn't work either. The code below is part of a giant case statement. <textarea cols="70" rows="5" name="<?php echo $value['id']; ?>" class="ainput" id="<?php echo $value['id']; ?>" type="<?php echo $value['type']; ?>" />

How can I lock the keyboard to limit the number of characters in a textarea?

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问题 The following code works great for locking the keyboard in IE6 and IE8 when a textarea reaches a certain length. Of course, it doesn't work on other browsers, and I can't figure out a way to turn it into a jQuery function that will work cross-browser. Is it possible to get the same behavior in FireFox and Webkit browsers? function checkLength(fld, maxLength){ if(fld.value.length > maxLength-1){ event.returnValue = false; } } <p><textarea name="third" id="third" onkeypress="checkLength(this,

wangEditor3提交表单

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使用 textarea wangEditor 从v3版本开始不支持 textarea ，但是可以通过onchange来实现 textarea 中提交富文本内容。点击这里 => 参考官网教程 <= < div id = "div1" > < p > 欢迎使用 < b > wangEditor < / b > 富文本编辑器 < / p > < / div > < textarea id = "text1" style = "width:100%; height:200px;" > < / textarea > < script src = "https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js" > < / script > < script type = "text/javascript" src = "../wangEditor.js" > < / script > < script type = "text/javascript" > var E = window . wangEditor var editor = new E ( '#div1' ) var $text1 = $ ( '#text1' ) editor . customConfig . onchange = function ( html ) { // 监控变化

How to save textarea content inside a .txt file with php

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问题 i'm a beginner with php, and i'm trying to save textarea content inside a news.txt file. After saving, i'll display the results in another page. Everything works fine, the ddate and the title is displayed perfectly, and even the textarea content, but if i press enter to create a new line, it doesn't work anymore. here's what happen and some code. Notice: Undefined offset: 1 in C:\Virtual Servers\xampp\htdocs\read.php on line 17 Notice: Undefined offset: 2 in C:\Virtual Servers\xampp\htdocs

Resize TextArea on load

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问题 I'm having issues trying to resize a text area, I can do it as the user is typing but when they have submit it this gets put into a database and put into a text area below and display as a message on a message board but if the message exceeds the size of the Text Area it's not displayed I was wondering if anyone out there has had this issue and overcome it. Here is the solution I came up with for the resizing whilst typing, function resizeTextarea (id) { var a = document.getElementById(id); a

How to pass hidden information in a form in html?

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问题 How do I pass hidden information about a form? <form action="index.php" method="post"> <textarea rows="2" cols="30" NAME="com" > </textarea> <input type="submit" name="com_submit" value="com" /> </form> I need see that the comment is passed for which type of post so I need to pass the value of variable $type also by this form so how should I do that? I am a beginner so i am sorry if i am asking any stupid question? 回答1: Use a hidden field: <input type="hidden" name="form_type" value=

<textarea> inside <foreignObject> handles as expected in Chrome but not Firefox

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问题 I'm creating a textarea inside a foreignObject in an SVG as follows: var doc = document.getElementById("cover"); var foreign = document.createElementNS(svgNS,"foreignObject"); var textarea = document.createElementNS("http://www.w3.org/1999/xhtml","textarea"); foreign.setAttributeNS(null,"x",40); foreign.setAttributeNS(null,"y",40); foreign.setAttributeNS(null,"width",500); foreign.setAttributeNS(null,"height",200); doc.appendChild(foreign); textarea.setAttributeNS(null,"xmlns","http://www.w3