textarea | 易学教程

does <textarea> auto-encode inner html?

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问题 I was trying to print some text between <textarea> and </textarea> tags, but I've noticed that if I input some characters like < and > , textarea automatically converts them to < and > . Example: <textarea><script></textarea> will produce this HTML <textarea><script></textarea> Can you explain me why this happens? Thanks in advance, any help is appreciated, best regards. 回答1: It doesn't escape the contents. The HTML source remains exactly the same. It just has the capability to display the

How do you scroll to the position of the cursor in a textarea?

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问题 JS Fiddle Demo HTML <textarea rows='5'> sdfasjfalsfjasf;klasdfklaksdfkjlasdfkjlasdjkfadls;fjklasdfjklasdkjlfaskljdfkalsjdfjlkasdfkjlasdkjlfasfkl;ajklsdfjklasdfkjlaskjldfaskjlfkljsadkjlfaskjldfkjlasdfkjlasdjklfaskljdfkjlasfkjlasdkjlfasjklfajklsdfjklasdfjlkadjsdfasjfalsfjasf;klasdfklaksdfkjlasdfkjlasdjkfadls;fjklasdfjklasdkjlfaskljdfkalsjdfjlkasdfkjlasdkjlfasfkl;ajklsdfjklasdfkjlaskjldfaskjlfkljsadkjlfaskjldfkjlasdfkjlasdjklfaskljdfkjlasfkjlasdkjlfasjklfajklsdfjklasdfjlkadjsdfasjfalsfjasf

textarea's “required” attribute doesn't work even though the value is empty

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问题 I created a simple page with list box and text area with conditions that all should be required. List box are working fine, but textarea box doesn't tell that the field is required to be filled. <!DOCTYPE html> <html> <head> <title>Ratings & Reviews</title> <body> <form> <span>Customer Service*</span> <span> <select name=customer id=aa required> <option selected="rate" value="" disabled>rate</option> <option value=1>1</option> <option value=2>2</option> <option value=3>3</option> <option

textarea onclick remove text

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问题 I know how to remove text in a simple html textbox but html textareas seem much more complicated. instead of the value attribute you put the text right between: <html> <textarea> </textarea>. </html> This is why im having trouble making an onFocus and onBlur event. 回答1: <textarea name="message" onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;"> Put anything for default value here </textarea> Live example: http://jsfiddle.net

Get caret XY coordinates in text area [duplicate]

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问题 This question already has answers here : How do I get the (x, y) pixel coordinates of the caret in text boxes? (3 answers) Closed 5 years ago . Is there any good JQuery/JS solution to get the absolute position of a caret in text area (given in X/Y coordinates OR top/left coordinates). The native Event object of keyDown JQuery function gives the x/y coordinates of the cursor and I want something similar the works on the working caret. My goal is to add a floating HTML element the will be

Vue.js 章6 v-model与表单

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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <script src="Vue.2.6.10.js"></script> </head> <body>  <div id="app1"> <textarea name="" v-model="text" id="textarea" cols="30" rows="10"></textarea> <textarea name="" @input = 'handleInput' id="textarea" cols="30" rows="10"></textarea>  <p>输入内容：</p> <p style="white-space:

How to stop html textarea from interpreting html entities into their characters

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问题 I have an html textarea that is used to display a string from a database. The textarea can be edited and any changes are saved to the database. The problem is that when it recieves entities ® in a string it converts them into their characters, and then when the text is saved the characters overwrite the entities. For example: The database would return the string Microsoft® which would be displayed as Microsoft®, and then saved that way. Is there a way to force textareas to not interpret

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

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问题 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

jQuery textarea append newline behavior

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问题 I'm trying to append a strings which end in newlines to a textarea using jQuery. However, different newline tokens show different behavior in Firefox3.5 and IE8, and I can't seem to find a way to use something that works for both browsers. \n works in FF but not in IE <br/> and \r\n work in IE but not in FF No luck using <pre></pre> tags either I've seen info on the IE innerHTML issue but I'm not exactly sure how to best approach this problem in jQuery. Thanks for any help! 回答1: Not sure how

Scaling GUI.TextArea with Screen Size

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问题 i'm trying to scale a GUI.TextArea. the code block works in OnGui function. But when i change screen size , the textArea won't be on correct position and size. first screen size second screen size is there any solution like Canvas.ScaleMode.ScaleToFit or should i recreate the GUI.TextArea? Edit: I use button,some image and text in canvas and easily scale them with canvasScaler script. But the text object doesn't contain multiple line text so i create textarea with gui for display multiple