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Error with window.get_elements if an return element or child are a checkbox #622

ulukyn opened this issue Oct 19, 2020 · 1 comment


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ulukyn commented Oct 19, 2020


  • pywebview version: 3.3.4
  • platform / version: Linux / Manjaro GTK


I want get all checkboxes from a html page. I use window.get_elements but window.get_elements() trigger a JS TypeError. The error happens with elements selectionDirection, selectionStart and selectionEnd in the checkbox node.

A fast way to fix that are adding a try... catch in copyJSON (in js/ like

` var copyJSON = function(node, opts) {

    var copy = {};
    for (var n in node) {
        try {
            if (typeof node[n] !== "undefined" && typeof node[n] !== "function" && n.charAt(0).toLowerCase() === n.charAt(0)) {
                if (typeof node[n] !== "object" || node[n] instanceof Array) {
                    if (opts.cull) {
                        if (node[n] || node[n] === 0 || node[n] === false) {
                            copy[n] = node[n];
                    } else {
                        copy[n] = node[n];
        } catch {
    copy = boolFilter(copy, opts.domProperties);
    return copy;


But, this don't fix the bug, just hide it. But i have no idea how fix that... and if can be fixed.

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r0x0r commented Oct 20, 2020

An ancient version of domJSON was used. The issue is fixed by upgrading domJSON to the latest version.
The fix is committed to master.

@r0x0r r0x0r closed this as completed Oct 20, 2020
@r0x0r r0x0r mentioned this issue Dec 3, 2020
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