Get DOM text node from point?

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无人共我
无人共我 2020-12-30 06:49

Just like I can get an element from a point with document.elementFromPoint or document.getElementFromPoint, is it possible to somehow get a text no

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  •  独厮守ぢ
    2020-12-30 07:47

    Here is an implementation that works in all current browsers: https://github.com/nuxodin/q1/blob/master/q1.dom.js

    document.betaNodeFromPoint = function(x, y){
        var el = document.elementFromPoint(x, y);
        var nodes = el.childNodes;
        for ( var i = 0, n; n = nodes[i++];) {
            if (n.nodeType === 3) {
                var r = document.createRange();
                r.selectNode(n);
                var rects = r.getClientRects();
                for ( var j = 0, rect; rect = rects[j++];) {
                    if (x > rect.left && x < rect.right && y > rect.top && y < rect.bottom) {
                        return n;
                    }
                }
            }
        }
        return el;
    };
    

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