textarea

Show how many characters remaining in a HTML text box using JavaScript

99封情书 提交于 2019-11-28 19:52:07
问题 This is my code: function textCounter(field, countfield, maxlimit) { if (field.value.length > maxlimit) { field.value = field.value.substring(0, 160); field.blur(); field.focus(); return false; } else { countfield.value = maxlimit - field.value.length; } } How can I display how many characters are remaining from a certain text box with a limit of 160? 回答1: Dynamic HTML element functionThe code in here with a little bit of modification and simplification: <input disabled maxlength="3" size="3"

How to wrap selected text in a textarea?

ε祈祈猫儿з 提交于 2019-11-28 19:40:18
How can I get the user selected text (just inside textarea) and apply actions to it something like wrap the selection [#bold]selected text[/bold] ? Building off what Soufiane posted, here's the code translated to jquery with the ability to pass in the open and close tags: function wrapText(elementID, openTag, closeTag) { var textArea = $('#' + elementID); var len = textArea.val().length; var start = textArea[0].selectionStart; var end = textArea[0].selectionEnd; var selectedText = textArea.val().substring(start, end); var replacement = openTag + selectedText + closeTag; textArea.val(textArea

文本域,支持多行文本输入

狂风中的少年 提交于 2019-11-28 19:18:32
当用户需要在表单中输入大段文字时,需要用到文本输入域。 语法 : <textarea rows="行数" cols="列数">文本</textarea> 1 、<textarea>标签是成对出现的,以<textarea>开始,以</textarea>结束。 2 、 cols : 多行输入域的 列数 。 3 、 rows : 多行输入域的 行数 。 4 、在<textarea></textarea>标签之间可以输入 默认值 。 举例 : <form method="post" action="save.php"> <label>联系我们</label> <textarea cols="50" rows="10" >在这里输入内容...</textarea> </form> 注意:代码中的<label>标签会在后面讲到。 在浏览器中显示结果: 注意这两个属性可用css样式的width和height来代替:col用width、row用height来代替。(这两个css样式在以后的章节会讲解) 来源: https://www.cnblogs.com/iBoundary/p/11421974.html

How can I only allow shift+enter to return new line in text area?

狂风中的少年 提交于 2019-11-28 18:09:48
In a default behavior, the textarea "press" enter will become new line, but I don't want to having a new line, I want the user press "shift+enter", instead. How can I do so? or... ...can I return the textarea enter event before it actually fire to the text area?? Thank you. BrunoLM $("textarea").keydown(function(e){ // Enter was pressed without shift key if (e.keyCode == 13 && !e.shiftKey) { // prevent default behavior e.preventDefault(); } }); Try the jsFiddle . 来源: https://stackoverflow.com/questions/5842813/how-can-i-only-allow-shiftenter-to-return-new-line-in-text-area

Can codemirror be used on multiple textareas?

这一生的挚爱 提交于 2019-11-28 17:39:28
Can codemirror be used on more than one textarea? I use many textareas that are generated dynamically. <script type="text/javascript"> var editor = CodeMirror.fromTextArea('code', { height: "dynamic", parserfile: "parsecss.js", stylesheet: "codemirror/css/csscolors.css", path: "codemirror/js/" }); </script> I would prefer setting a class on the textarea to connect it to codemirror. Is it possible? The Another way of solving it would be to set multiple IDs. The code above sets the ID "code" to connect to codemirror. alexn You can actually make multiple calls to CodeMirror.fromTextArea to

How to create TextArea as input in a Shiny webapp in R?

回眸只為那壹抹淺笑 提交于 2019-11-28 16:51:43
I am trying to create simple webapp where I want to take in multiline input from user using HTML textarea control. Is there any out of the box way of creating such an input control in Shiny? Help page of textInput doesn't show much options textInput {shiny} R Documentation Create a text input control Description Create an input control for entry of unstructured text values Usage textInput(inputId, label, value = "") Arguments inputId Input variable to assign the control's value to label Display label for the control value Initial value Value A text input control that can be added to a UI

How can I prevent the textarea from stretching beyond his parent DIV element? (google-chrome issue only)

烈酒焚心 提交于 2019-11-28 16:27:05
How can I prevent the textarea from stretching beyond its parent DIV element? I have this textarea inside a table which is inside a DIV and it seems that it causes the entire table to stretch out of its bounds. You can see an example of the same situation even in a more simple case, just putting a text area inside a div (like what is used here in www.stackoverflow.com) You can see from the images below that the textarea can stretch beyond the size of its parent? How do I prevent this? I'm kind of new to CSS so I don't really know what CSS attributes should I be using. I tried several like

Rails — Add a line break into a text area

这一生的挚爱 提交于 2019-11-28 15:12:33
I got a rails app where I can input a few paragraphs of text into my model. The problem is I dont know how to input any line breaks. I've tried to add " {ln}{/ln} ; {&nbsp} and {br}{/br}" but that only displays the html as text and no break. Is there anyway I can set it so the text area control will use any of the html I place within the model entry? Is there any thing I can type so rails will recognize, hey put a line here? The problem isn't so much editing the value as it is rendering it later. To add newline characters to your value while editing it in a textarea, just hit the return key.

Load text from local .txt file into html textarea using JavaScript

拜拜、爱过 提交于 2019-11-28 14:02:28
I have a <textarea> element and a button that calls a loadFile() JavaScript function. I want this function to allow me to load the text from a .txt file on my local machine into the textarea. Any help with this would be greatly appreciated! You can use the File and FileReader objects to read local files. You can use an input element with type="file" to allow the user to select a file. <input id="myFile" type="file"/> <textarea id="myTextArea" rows="4" columns="20"></textArea> After the user has selected a file, you can get the File object from the input element. For example... var file =

Dojo validation of a textarea

筅森魡賤 提交于 2019-11-28 12:22:20
I'm attempting to use dojo for the first time, so this may be be obvious. I have a very simple form with one textarea in it that needs to be filled in. <script src="http://ajax.googleapis.com/ajax/libs/dojo/1.10.3/dojo/dojo.js"></script> <form id='form1' action="" method="" dojoType="dijit.form.Form"> <label for="dob">desc:</label> <textarea class='multilinecontrol' dojoType="dijit.form.Textarea" selected='true' required='true'></textarea> <button type='submit' id="next" name="next" dojoType="dijit.form.Button"> Next</button> </form> I've added the 'required' property, so i can ensure the form