Error-logging for javascript on client side

Question

My project which contains a lot of pages with forms. This is a backend of banking CRM system, so any error during working process is to be captured and investigated. On the

Answer 1

Look into window.onerror. If you want to capture any errors, and report them to the server, then you could try an AJAX request, perhaps.

window.onerror = function(errorMessage, errorUrl, errorLine) {
    jQuery.ajax({
        type: 'POST',
        url: 'jserror.jsf',
        data: {
            msg: errorMessage,
            url: errorUrl,
            line: errorLine
        },
        success: function() {
            if (console && console.log) {
                console.log('JS error report successful.');
            }
        },
        error: function() {
            if (console && console.error) {
                console.error('JS error report submission failed!');
            }
        }
    });

    // Prevent firing of default error handler.
    return true;
}