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Enter key in textarea

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问题 I have a textarea , On every Enter key pressed in textarea I want new line to be started with a bullet say (*). How to go about it ? No jQuery please. I can observe for the Enter key , after that !? Should I have to get the whole value of textarea and append * to it and again fill the textarea ? 回答1: You could do something like this: <body> <textarea id="txtArea" onkeypress="onTestChange();"></textarea> <script> function onTestChange() { var key = window.event.keyCode; // If the user has

How to have a textarea to keep scrolled to the bottom when updated

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问题 My problem is a bit off the cuff here, so I'll try to explain this best I can. I have a text area, having css of #object{overflow:hidden;resize:none;} . I am trying to prevent it from spawning scroll bar while also resizing itself. This textarea is synced with an external script's console meaning it updates. By default however, it will stay at the top unless you highlight text, dragging off to the bottom of the element. This would be the only way to scroll down other than with arrow keys,

Limit number of lines in textarea and Display line count using jQuery

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Using jQuery I would like to: Limit the number of lines a user can enter in a textarea to a set number Have a line counter appear that updates number of lines as lines are entered Return key or /n would count as line Kudos to anyone who can help! $(document).ready(function(){ $('#countMe').keydown(function(event) { // If number of lines is > X (specified by me) return false // Count number of lines/update as user enters them turn red if over limit. }); }); <form class="lineCount"> <textarea id="countMe" cols="30" rows="5"></textarea><br> <input type="submit" value="Test Me"> </form> <div class

Limiting number of lines in textarea

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I'm looking for a javascript that can limit the number of lines (by line I mean some text ended by user pressing enter on the keyboard) the user is able to enter in textarea. I've found some solutions but they simply don't work or behave really weird. The best solution would be a jquery plugin that can do the work - something like CharLimit , but it should be able to limit text line count not character count. This might help (probably be best using jQuery, onDomReady and unobtrusively adding the keydown event to the textarea) but tested in IE7 and FF3: <html> <head><title>Test</title></head>

Preserve line breaks in textarea

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问题 I have a form with a textarea and I want to preserve line breaks entered by the user when outputting the content. For exemple, if I write in textarea : Here is a sentence. Here is another. here is one more. This is a new paragraph. Here is a new sentence. Here is another. I want the same output and not : Here is a sentence. Here is another. here is one more. This is a new paragraph. Here is a new sentence. Here is another. How could I preserve line breaks? 回答1: Generally you just need to add

How to read line by line of a text area HTML tag

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问题 I have a text area where each line contains Integer value like follows 1234 4321 123445 I want to check if the user has really enetered valid values and not some funny values like follows 1234, 987l; For that I need to read line by line of text area and validate that. How can i read line by line of a text area using javascript? 回答1: Try this. var lines = $('textarea').val().split('\n'); for(var i = 0;i < lines.length;i++){ //code here using lines[i] which will give you each line } 回答2: This

Understanding what goes on with textarea selection with JavaScript

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I am working on an in-browser editor within a textarea . I have started looking for some information on dealing with textarea selection and found this jQuery plugin, fieldSelection that does some simple manipulation. However, it doesn't explain what's going on. I want to understand more on textarea selection in JavaScript, preferably with a description of both pre-DOM3 and post-DOM30 scenarios. Start with PPK's introduction to ranges . Mozilla developer connection has info on W3C selections . Microsoft have their system documented on MSDN . Some more tricks can be found in the answers here .

How remove word wrap from textarea?

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my simple textarea doesn't show a horizontal bar when text overflows. It wraps text for a new line. So how do I remove wordwrap and display horizontal bar when text overflows? schnaader Textareas shouldn't wrap by default, but you can set wrap="soft" to explicitly disable wrap: <textarea name="nowrap" cols="30" rows="3" wrap="soft"></textarea> EDIT: The "wrap" attribute is not officially supported. I got it from the german SELFHTML page (an english source is here ) that says IE 4.0 and Netscape 2.0 support it. I also tested it in FF 3.0.7 where it works as supposed. Things have changed here,

Insert text into textarea at cursor position (Javascript)

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I would like to create a simple function that adds text into a text area at the user's cursor position. It needs to be a clean function. Just the basics. I can figure out the rest. Raab function insertAtCursor(myField, myValue) { //IE support if (document.selection) { myField.focus(); sel = document.selection.createRange(); sel.text = myValue; } //MOZILLA and others else if (myField.selectionStart || myField.selectionStart == '0') { var startPos = myField.selectionStart; var endPos = myField.selectionEnd; myField.value = myField.value.substring(0, startPos) + myValue + myField.value.substring

set cursor to specific position on specific line in a textarea

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问题 I am trying to somewhat duplicate the "autocorrect" functionality seen in programs like Microsoft Office's Outlook. For starters, anytime a user types "a " (the letter a and a space) at the beginning of a line I want to change that text to "*Agent [" I have written the below which works fine if you are typing along in the textarea from top to bottom. But if you type anywhere else in the textarea the text is changed then the cursor moves to the end of the textarea. I want the cursor to always