files/en-us/web/api/textupdateevent/selectionend/index.md
{{APIRef("EditContext API")}}{{SeeCompatTable}}
The TextUpdateEvent.selectionEnd read-only property indicates the position of the end of the selection (or caret) within the text content of the editable region attached to the {{domxref("EditContext")}} object.
A {{jsxref("Number")}}.
textupdate to render the edited text and user selectionThis example shows how to use the selectionEnd property to render the selected text within a {{domxref("EditContext/textupdate_event", "textupdate")}} event handler.
#editor {
height: 200px;
background: #eeeeee;
color: black;
}
.selection {
display: inline-block;
vertical-align: bottom;
background: blue;
color: white;
min-width: 2px;
height: 3ex;
}
<div id="editor"></div>
const editorEl = document.getElementById("editor");
const editContext = new EditContext();
editorEl.editContext = editContext;
editContext.addEventListener("textupdate", (e) => {
// Clear the current content.
editorEl.textContent = "";
const text = editContext.text;
const { selectionStart, selectionEnd } = e;
// Render the text before the selection.
const textBefore = document.createElement("span");
textBefore.textContent = text.substring(0, selectionStart);
// Render the selected text, or caret.
const textSelected = document.createElement("span");
textSelected.classList.add("selection");
textSelected.textContent = text.substring(selectionStart, selectionEnd);
// Render the text after the selection.
const textAfter = document.createElement("span");
textAfter.textContent = text.substring(selectionEnd);
editorEl.appendChild(textBefore);
editorEl.appendChild(textSelected);
editorEl.appendChild(textAfter);
console.log(`Text before selection: ${textBefore.textContent}`);
console.log(`Selected text: ${textSelected.textContent}`);
console.log(`Text after selection: ${textAfter.textContent}`);
});
{{Specifications}}
{{Compat}}