Avoid using JavaScript in URLs

Metadata

ID: javascript-best-practices/no-script-url

Language: JavaScript

Severity: Notice

Category: Best Practices

JavaScript URLs are evaluated the same way eval is executed. This can lead to arbitrary code execution.

var a = 'javascript:void(0);';
var a = 'javascript:';
var a = `javascript:`;
var a = `JavaScript:`;

var a = 'Hello World!';
var a = 10;
var url = 'xjavascript:'
var url = `xjavascript:`
var url = `${foo}javascript:`
var a = foo`javaScript:`;

1
2
rulesets:
  - javascript-best-practices     # Rules to enforce JavaScript best practices.

Create a static-analysis.datadog.yml with the content above at the root of your repository
Use our free IDE Plugins or add Code Analysis scans to your CI pipelines
Get feedback on your code

For more information, please read the Code Analysis documentation

Identify code vulnerabilities directly in your
VS Code editor

Identify code vulnerabilities directly in
JetBrains products