首頁 > 開發者 > JavaScript
動態執行javascript代碼，eval or Function，哪個效能好？
<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/><title>動態執行javascript代碼</title><script type="text/javascript"> String.prototype.code = function(){ return (new Function('with(this) { return ' + this + '}' )).call({}); }; var sCode = 'Math.round(3+2.5)*1.2'; var result = 0; for(var i=0;i<10000;i++){ result += sCode.code(); //result += eval(sCode); } alert(result);</script></head><body></body></html>
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
