<script?type="text/javascript">
var?list=new?Array("1","2","3","4","5");
document.write("1"?in?list);
document.write("2"?in?list);
document.write("3"?in?list);
document.write("4"?in?list);
document.write("5"?in?list);
</script>為什么1~4輸出為true,5輸出為false？
請教一個(gè)js的問題，關(guān)于數(shù)組
tingru
2016-10-02 21:35:49
