防止javascript从自动转义和角色

Question

I am seeing & in my textbox but I only want & . I think it is something to do with the way browser interpret javascript .innerHTML . The text with & must pass through div. For some reason, I can't directly assign value to the text box.

HTML Code

<div id='div'></div>
<input id='textbox' type='text' />

Javascript Code

var str = 'this & char';
$('#div').append("<div>" + str + "</div>");
$('#textbox').val($('#div').html());

Actual HTML output

<div>this &amp; char</div>

and user sees this & char this & char in textbox.

Desire HTML output

<div>this & char</div>

and user sees this & char in textbox.

Answer 1

You're using .html() which is the reason the & gets translated to & . Since it's an input, it must be in plain text and hence, when you write & in an input field, it's displayed as a text.

$('#textbox').val($('#div').text());

Answer 2

Instead of using html() use text() . html() treats the string as HTML, text() treats the content as text.

 var str = 'this & char'; $('#div').append("<div>" + str + "</div>"); $('#textbox').val($('#div').text()); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id='div'></div> <input id='textbox' type='text' />