<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>Array對(duì)象 </title><script type="text/javascript">? ?var myarr1= ["我","愛(ài)","你"];? ?document.write(myarr1.slice(-3,-1))</script></head><body></body></html>
用兩個(gè)負(fù)數(shù)怎樣輸出“愛(ài)“，”你”兩個(gè)字
慕瓜4047880
2018-07-09 16:50:18
