You need to escape the string you are writing out into DoEdit to scrub out the double-quote characters. They are causing the onclick HTML attribute to close prematurely.

Using the JavaScript escape character, \, isn't sufficient in the HTML context. You need to replace the double-quote with the proper XML entity representation, ".

many things possible:

• use character code 34 (String.fromCharCode(34)) and concatanate
• double escape "\\\""
• use single quotes to quote double quotes '"'

probably more…

var q=String.fromCharCode(34);
document.write(q+"quoted text, using a variable with String.fromCharCode(34)"+q+"<br>");
document.write("\"quoted text, single escaped quotes\"<br>");
document.write('"quoted text, quotes in single quotes"<br>');
document.write("you may use document.write(\"\\\"quoted text, single escaped quotes, displayed after double escaping\\\"\");<br>");

Use the replace() method:

function esc_quot(text)
{
    return text.replace("\"", "\\\"");
}

data: '{ id: "' + esc_quot(news_id) + '", title: "' + esc_quot(news_title) + '", body: "' + esc_quot(news_body) + '" }',

<script>
   var mystring = '{{ creatif.creatifsName|escape('js') }}'
</script>

https://twig.symfony.com/doc/2.x/filters/escape.html

Remember to wrap your variable declaration in quotes for it to be set as a string in the JS.