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davideast/selectText.js

Created October 19, 2017 17:55
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  1. davideast created this gist Oct 19, 2017.
    10 changes: 10 additions & 0 deletions selectText.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,10 @@
    function selectText(selection) {
    var range = selection.getRangeAt(0);
    function replaceRange(s, start, end, substitute) {
    return s.substring(0, start) + substitute + s.substring(end);
    }
    var text = selection.baseNode.textContent.substring(range.startOffset, range.endOffset);

    var mark = `<mark>${text}</mark>`;
    range.startContainer.parentElement.innerHTML = replaceRange(range.startContainer.textContent, range.startOffset, range.endOffset, mark);
    }