Released: August 26, 2025

Survey Now v2.3.4 adds a new API event for intercepting or canceling expression evaluation, along with various bug fixes and minor enhancements.

In Survey Now Form Library v2.3.4, a new onExpressionRunning event lets you intercept or cancel expression evaluation.

For example, the snippet below prevents conditional visibility expressions (visibleIf) from running:

import { Model } from "survey-core";
const surveyJson = { ... };
const survey = new Model(surveyJson);

survey.onExpressionRunning.add((_, options) => {
  if (options.propertyName === "visibleIf") {
    options.allow = false;
  }
});

Form Library

• Shadow DOM: Dropdown doesn't apply a filter and doesn't allow entering a space character (#10273)
• The parentQuestion property doesn't contain a parent question instance for a question nested in a Dynamic Panel (#10210)
• Single-Select Matrix: All rows remain invisible until the visibleIf condition for one of the rows evaluates to true (#10265)
• Radio Button Group: Question-level comment value is copied to the Other item's value when individual choice comments are enabled (#10272)
• Dynamic Matrix: {rowIndex} placeholder skips numbers when rows are conditionally hidden (#10279)
• Survey Creator: Deprecated mode: "display" is added to survey JSON along with valid readOnly: true (#10281)

Survey Creator

• Disabled toolbox items remain active (#7092)
• Disabled tabs remain active (#7100)
• A toolbox item doesn't apply a localized title for the default locale (#6334)
• progressBarLocation values are not localized when a custom locale is applied (#7110)
• Machine Translation dialog: The "Export to CSV" action produces a file that contains no translations (#7059)
• Logic tab: The setValueExpression property is not updated after a logic rule is edited (#7097)
• Subitem dropdown shows incorrect selected item (#7098)

Dashboard

• VisualizationPanel: The trial banner is displayed within internal panels (#605)
• Table View: Column actions display two tooltips at the same time (#602)

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