Avoid using Javascript in URLs

Docs > Code Analysis > Static Analysis Rules > Avoid using Javascript in URLs

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Metadata

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

Language: TypeScript

Severity: Notice

Category: Best Practices

Description

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

Non-Compliant Code Examples

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

Compliant Code Examples

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

How to use this rule

1
2
rulesets:
  - typescript-best-practices     # Rules to enforce TypeScript best practices.

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