show html output in textarea instead of HTML code

问题

If I have a textarea including some HTML code, how can I write a JavaScript function to show the HTML output instead of HTML code itself, for example:

<textarea id="mytextarea">
<table border=1><tr><td>cellone</td>td>celltwo</td></tr></table
</textarea>
<input type=button onclick="HTMLoutput();"/>

<script>
HTMLoutput()
{
//Code to show html output instead of html code in textarea
}
</script>

How can I do this? What is the suggested code to write inside the HTMLoutput()?

回答1:

So to convert the the html code to a formated html you need to do:

$('resultDiv').append($('<div/>').html($('.txtArea').val()+"<br>");

here's an example that use div with contentEditable set to true.

回答2:

It sounds like you're asking how to take some HTML and display its rendered result in your document.

That's exactly what the innerHTML property does.
Simply pick a DOM element to display the result in, and set its innerHTML to the HTML to display.

来源：https://stackoverflow.com/questions/19441026/show-html-output-in-textarea-instead-of-html-code