add custom lint error marker for codemirror - javascript

I receive the errors in my code from an external API. It gives me the
1)line number
2) error description
I could achieve the highlighting process but I need to add a lint error marker on the left side of the textarea.
The following code enable me to add lint marker when the page is load by definingoption called 'lintWith', However, I need to add these lint markers when I click on the button.
The is the code I'm using:
<html>
<head>
<link rel="stylesheet" href="codemirror/lib/codemirror.css">
<script src="codemirror/lib/codemirror.js"></script>
<script src="codemirror/addon/edit/matchbrackets.js"></script>
<script src="codemirror/mode/python/python.js"></script>
<!-- <script src="codemirror/addon/selection/active-line.js"></script> -->
<link rel="stylesheet" href="codemirror/addon/lint/lint.css">
<script src="codemirror/addon/lint/lint.js"></script>
<script src="codemirror/addon/lint/javascript-lint.js"></script>
<script src="cm-validator-remote.js"></script>
<style type="text/css">
.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}
.CodeMirror-empty { outline: 1px solid #c22; }
</style>
</head>
<body>
<div><textarea id="code" name="code" placeholder="Code goes here...">
mycode
pass
a__ = 5
Check
Hello World
123456
</textarea></div>
</body>
<script type="text/javascript">
function check_syntax(code, result_cb)
{
var error_list = [{
line_no: 2,
column_no_start: 14,
column_no_stop: 17,
fragment: "def doesNothing:\n",
message: "invalid syntax.......",
severity: "error"
}, {
line_no: 4,
column_no_start: 1,
column_no_stop: 3,
fragment: "a__ = 5\n",
message: "convention violation",
severity: "error"
}]
result_cb(error_list);
}
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
mode: { name: "python",
version: 2,
singleLineStringErrors: false },
lineNumbers: true,
indentUnit: 4,
tabMode: "shift",
gutters: ["CodeMirror-lint-markers"],
lintWith: {
"getAnnotations": CodeMirror.remoteValidator,
"async": true,
"check_cb": check_syntax
}
});
function AddLintMarker(){
// I want to add the lintWith markers when click on this button
// i've tried like this editor.setOption("lintWith.getAnnotations",CodeMirror.remoteValidator ) but it doesn't work
}
</script>
<input type="button" value="add boxes" onclick="AddLintMarker()">
</html>
Here the code lint marker is added when the page is load because it is assigned to the editor but I want the lint maker to shows only when I click on the button and provide values to the check_syntx function,
and for the lintWith it is defined in the lint.js as the following :
CodeMirror.defineOption("lintWith", false, function(cm, val, old) {
if (old && old != CodeMirror.Init) {
clearMarks(cm);
cm.off("change", onChange);
CodeMirror.off(cm.getWrapperElement(), "mouseover", cm._lintState.onMouseOver);
delete cm._lintState;
}
if (val) {
var gutters = cm.getOption("gutters"), hasLintGutter = false;
for (var i = 0; i < gutters.length; ++i) if (gutters[i] == GUTTER_ID) hasLintGutter = true;
var state = cm._lintState = new LintState(cm, parseOptions(val), hasLintGutter);
cm.on("change", onChange);
CodeMirror.on(cm.getWrapperElement(), "mouseover", state.onMouseOver);
startLinting(cm);
}
});

You need to use setGutterMarker method from CodeMirror. It takes line, markerId and markerElement and put it to the needed line on the gutter area.
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
lineNumbers: true,
indentUnit: 4,
gutters: ["CodeMirror-lint-markers"],
});
function makeMarker() {
var marker = document.createElement("div");
marker.innerHTML = `<div>⚠️</div>`;
marker.setAttribute("title", "Some text");
return marker;
}
editor.doc.setGutterMarker(1, "CodeMirror-lint-markers", makeMarker());
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.3/codemirror.min.js"
integrity="sha512-/8pAp30QGvOa8tNBv7WmWiPFgYGOg2JdVtqI8vK+xZsqWHnNd939v9s+zJHXZcJe5wPD44D66zz+CLTD3KacYA=="
crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.3/codemirror.min.css"
integrity="sha512-uf06llspW44/LZpHzHT6qBOIVODjWtv4MxCricRxkzvopAlSWnTf6hpZTFxuuZcuNE9CBQhqE0Seu1CoRk84nQ=="
crossorigin="anonymous" referrerpolicy="no-referrer" />
</head>
<body>
<textarea id="code" name="code" placeholder="Code goes here...">
mycode
pass
a__ = 5
Check
Hello World
123456
</textarea>
</body>
</html>

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And when i open the file in my browser it shows the title inside the tab an thats it. Investigating it with the browser tools it shows the following:
test.html:30 Uncaught SyntaxError: Unexpected identifier
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at onload (test.html:41)
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Can you figure out whats wrong? Thanks in advance.
Greetings
Please check the below code..
The cypher works for me, First test with some simple cypher to test whether you are connecting to neo4j using bolt.
Then add your cypher check proper syntax too.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<link href="style.css" rel="stylesheet" />
<script src="http://code.jquery.com/jquery-2.0.3.min.js" data-semver="2.0.3" data-require="jquery"></script>
<script src="https://rawgit.com/neo4j-contrib/neovis.js/master/dist/neovis.js"></script>
<script type="text/javascript">
function draw() {
alert("inside method");
var viz;
var config = {
container_id: "viz",
server_url: "bolt://127.0.0.1:7687",
server_user: "Neo4j",
server_password: "password",
labels: {
},
relationships: {
},
initial_cypher: "MATCH (n:Movie) RETURN n LIMIT 1"
},
viz = new NeoVis.default(config);
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viz.render();
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This is a sample page with two playlists:
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I moved the API key out of ytv.js into a global variable.
// Set apiKey as global var
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Other than that, the js is the same as found here.
How can I modify this plugin to allow multiple instances?
Update:
I have also renamed the window vars with no change in result.
window.controller1 = new YTV(...);
window.controller2 = new YTV(...);
Solution:
As inferred from the marked answer below
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first of all:
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Use
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