如何将现有的DOM元素文本转换为HTML元素？

Question

I have an element that is already present on the page with HTML as a string. How can I take the text from that element and convert it into HTML and re-inject it back into the existing element?

Everything I try re-renders the elements innerhtml as text.

window.current_element_content=window.current_element.previousElementSibling.innerHTML;
window.current_element.previousElementSibling.getElementsByTagName('div').innerHTML = window.current_element_content;

Example of the text when printed on the console.

<tr>
        <td headers="mon">
            9:00 AM - 4:00 PM
        </td>
        <td headers="tues">
            9:00 AM - 4:00 PM
        </td>
        <td headers="wed">
            9:00 AM - 4:00 PM
        </td>
        <td headers="thurs">
            9:00 AM - 4:00 PM
        </td>
        <td headers="fri">
            9:00 AM - 4:00 PM
        </td>
        <td headers="sat">
            Closed
        </td>
        <td headers="sun">
            Closed
        </td>

Answer 1

You can see how to decode HTML entities from here: Unescape HTML entities in Javascript?

After that you can inject your code into a given element using .innerHTML property:

 function htmlDecode(input){ var e = document.createElement('div'); e.innerHTML = input; return e.childNodes.length === 0 ? "" : e.childNodes[0].nodeValue; } $(document).ready(function(){ var s = '<input type=button value="Inserted Button">'; document.getElementById('my_place').innerHTML = htmlDecode(s); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script> <div id="my_place"> &nbsp; </div> 

In the above code jQuery is used only to trigger on document.ready.

Answer 2

You need to read out the textContent instead of the innerHTML , and then write that to innerHTML like you had it:

var element = current_element.previousElementSibling.querySelector('div');
element.innerHTML = element.textContent;

Note also that getElementsByTagName returns a NodeList which does not have innerHTML . Instead use querySelector .