When JavaScript's eval() Can Be Used Safely
Introduction
Eval() is often considered "evil" in JavaScript due to its potential risks, including code injection and performance issues.但是,在某些情況下,可以接受使用eval()可以接受。
地址危險Ensure Controlled Code Generation:
Strings being evaluated must come from trusted sources or be sanitized to prevent malicious code injection.
Consider Performance Overhead: Weigh the potential performance hit caused by using eval() against the convenience it提供。
預編碼代碼:
對於常用函數,預先編譯代碼以消除與eval()相關的性能開銷。被帶走。在控制代碼生成並且性能問題最小的情況下,eval()可以提供一種簡潔,方便的方法來評估用戶輸入的功能。免責聲明: 提供的所有資源部分來自互聯網,如果有侵犯您的版權或其他權益,請說明詳細緣由並提供版權或權益證明然後發到郵箱:[email protected] 我們會在第一時間內為您處理。
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