Unhandled http error while appending an html with script element

### Description ###
I have an application where the customers can load arbitrary HTML code which is then loaded into the DOM via jQuery.
A customer had a copy and paste error which linked to an non existing js file. This lead to an 404 but nevertheless jQuery pushes the return value (error HTML page) into a HTMLScriptElement text property. This leads to an exception:

    Uncaught SyntaxError: Unexpected token <
    at DOMEval (jquery-3.3.1.js:111)
    at Function.globalEval (jquery-3.3.1.js:345)
    at text script (jquery-3.3.1.js:9640)
    at ajaxConvert (jquery-3.3.1.js:8784)
    at done (jquery-3.3.1.js:9255)
    at XMLHttpRequest.<anonymous> (jquery-3.3.1.js:9548)
    at Object.send (jquery-3.3.1.js:9600)
    at Function.ajax (jquery-3.3.1.js:9206)
    at Function.jQuery._evalUrl (jquery-3.3.1.js:9367)
    at domManip (jquery-3.3.1.js:5759)

### Minimal test case ###
Put this HTML onto an webserver:
````html
<!DOCTYPE html>
<html>
  <head>
    <script type="text/javascript" src="https://code.jquery.com/jquery-3.3.1.js"></script>
    <title>Title</title>
	<script>
	function clickme() {
			var jBody = $(document.body);
			jBody.append('<script type="text/javascript" src="notexisting.js"><'+'/script>');
	}
	</script>
  </head>
  <body>
        <button onclick="clickme()">Click</button>
  </body>
</html>
````

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Unhandled http error while appending an html with script element #4126

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Unhandled http error while appending an html with script element #4126

Description

Description

Minimal test case

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

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