---
title: JavaScript – Avoid Use Of Eval Function
description: "Impact Area Security Severity High Affected Element All #### **Rule number** **SN-0107** ## Impact The eval() function evaluates or executes an argument. Improper use of eval() opens up your code for injection attacks and debugging can be more challenging, as…"
url: "https://community-staging.qualityclouds.com/qcdocs/qc/javascript-rules/javascript-avoid-use-of-eval-function/"
updated: "2025-03-21"
category: Best Practices Rules / JavaScript Rules
---

# JavaScript – Avoid Use Of Eval Function

Impact Area

Security

           Severity

High

           Affected Element

All

#### **Rule number**

**SN-0107**

## Impact

The eval() function evaluates or executes an argument. Improper use of eval() opens up your code for injection attacks and debugging can be more challenging, as no line numbers are displayed with an error.

## Remediation

Avoid the use of eval. It encourages the use of untrusted code. If you must execute arbitrary code, use GlideScriptEvaluator which ensures it came from a record.

### Time to fix

30 min

## Code examples

### Noncompliant code

let value = eval(‘obj.’ + propName);

### Compliant code

let value = eval(gs.getProperty(‘variableWhichHoldsSafeCode’));