Ace Editor highlight part of a line with marker

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I am attempting to partially highlight a line / lines using a marker.

according to the documentation on ranges it it possible to create one with 4 inputs: startLine, startColumn, endLine, endColumn

I fed such a range into an add marker method but it just highlights the entire lines

my code:

var editor = ace.edit("editor");
var Range = ace.require('ace/range').Range;
editor.session.addMarker(
        new Range(startLine - 1, startPos, stopLine - 1, stopPos),
        "highlightError",
        "line",
        true
);

I think my problem may be to do with the 3rd argument of addMarker, the documentation I managed to find only states that this should be the 'type of marker' but I cannot find what the available types of marker are.

Use "text" instead of "line" as a third argument.

Other supported types are "fullLine" and "screenLine" https://github.com/ajaxorg/ace/blob/master/lib/ace/layer/marker.js#L99

Highlight lines in Ace (Editor) · GitHub, CoffeeScript. marker = null;. require(["ace/range"], (range) ->. marker = editor.​getSession().addMarker(new range.Range(7, 0, 7, 2000), "warning", "line", true);. ). The main entry point into the Ace functionality. The Editor manages the EditSession (which manages Document s), as well as the VirtualRenderer , which draws everything to the screen. Event sessions dealing with the mouse and keyboard are bubbled up from Document to the Editor , which decides what to do with them.

I reaslised that the alternative option to 'line' was 'text' however setting this did not fix the issue for me. I ended up with hardly any highlighted area. Upon further research I realised that the markers created by addMarker() did not have their position set to absolute. I added position: absolute; to my highlightError class css and it fixed the issue and now highlights the correct text.

How can I highlight an individual line in Ace?, in highlighting single lines in the editor (to show errors we've detected in part. > > Is it possible to programmaticly highlight/change the foreground/ When using this approach you have to be aware that the marker is not However, you can highlight areas with the drawing markup tools (in the Comments panel). For example, choose the rectangle tool, and draw out a rectangle. By default, it will be red with no fill. But, you can select it, right click and choose Properties.

Because selected answer was not clear enough, I add an example in this answer.

You need to add position: absolute; to the highlighting class.

For example here I am using .blue to make the selection to blue, then I should add position: absolute; to it.

var editor = ace.edit("editor");
editor.setTheme("ace/theme/monokai");
editor.session.setMode("ace/mode/javascript");

var Range = ace.require("ace/range").Range;
editor.selection.setRange(new Range(4, 0, 6, 5));

editor.session.addMarker(new Range(0, 0, 1, 5), "blue", "text");
#editor {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}

.blue {
  position: absolute;
  background-color: blue;
}
<!DOCTYPE html>
<html lang="en">
<head>
<title>ACE in Action</title>
<script src="https://pagecdn.io/lib/ace/1.4.6/ace.js" integrity="sha256-CVkji/u32aj2TeC+D13f7scFSIfphw2pmu4LaKWMSY8=" crossorigin="anonymous"></script>
</head>
<body>

<div id="editor">
function foo(items) {
    var x = items * items;
    return x;
}

var test = foo(2);

console.log(test); //should be 4

console.log(foo(1)); //should be 1

console.log(foo(3)); //should be 9
</div>

</body>
</html>

Ace Editor highlight part of a line with marker, Ace Editor highlight part of a line with marker. I am attempting to partially highlight a line / lines using a marker. according to the documentation  I am attempting to partially highlight a line / lines using a marker. according to the documentation on ranges it it possible to create one with 4 inputs: startLine, startColumn, endLine, endColumn I fed such a range into an add marker method but it just highlights the entire lines.

Ace, Emitted when a back marker changes. Emitted when Returns the value of the distance between the left of the editor and the leftmost part of the visible content. The highlight text tool can only highlight "real" text. If you have a scanned document or a document in which text was converted to outlines, you cannot use this tool. You can "fake" it by using e.g. the rectangle tool, select e.g. yellow as the fill color and then change the transparency so that you see both the background (the "text") and the

EditSession, new EditSession(Document | String text, TextMode mode) If inFront is true , a front marker is defined, and the 'changeFrontMarker' event fires; Returns the value of the distance between the left of the editor and the leftmost part of the visible content. Enables or disables highlighting of the range where an undo occured. By using the command "Highlight Text Tool" certain parts of a PDF document can be selected, and used as a type of text marker function thus providing a clear marker or highlight. To do this entails selecting the command, and then by left-clicking and holding down the mouse on the desired text and releasing the mouse at the end of the desired text to be highlighted.

Ace Editor Bootstrap - JSFiddle, var x = "All this is syntax highlighted";. 9 <div class="text-center">---End of editor---</div>. 14 addMarker(new Range(3, 0, 15, 0), "ace_active-line", "​fullLine");. A tutorial demonstrating how to create an image or effects highlight in PowerDirector10 A circle/arrow pack is available for download here https://drive.g