测试JavaScript字符串处理性能的代码

代码如下: var oldtime = new Date().getTime(); var str = []; for(i=0;i<100000;i++) { str.push(‘abcabcabcabcabcabcabcabcabcabcabcabc’); } var newtime = new Date().getTime(); var joinTime = (newtime – oldtime); var oldtime = new Date().getTime(); var str=”; for(i=0;i<100000;i++) { str += ‘abcabcabcab