Fruit={4:"apple",2:"banana",3:"graps"}; var k; for(k in Fruit) {alert(k);}
2 3 4 当在IE8和FF以及其他浏览中4 2 3帮助我时,Ie9中将会依次发出警报 .我需要序列是 4 2 3
2 3 4
4 2 3
javascript internet-explorer-9
internet-explorer-9 ×1
javascript ×1