代码怎么执行的结果不是一样的，奇怪，求解
document.write("o[key] ••••••" + "
")
for (var key in o) {
document.write(key + " = " + o[key] + "
")
}
document.write("o.key ••••••" + "
")
for (var key in o) {
document.write(key + " = " + o.key + "
")
}
怎么结果不一样呀？？？？？
iwasee
2016-09-19
3 回答
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