<script type="text/javascript">var a = {
title:'this is title',
sex:'male',
intro:b
}var b = {
intro1:'111',
intro2:'222',
intro3:'333'
}
alert(a.intro.intro1);</script>
title:'this is title',
sex:'male',
intro:b
}var b = {
intro1:'111',
intro2:'222',
intro3:'333'
}
alert(a.intro.intro1);</script>
var b = {
intro1:'111',
intro2:'222',
intro3:'333'
}
var a = {
title:'this is title',
sex:'male',
intro:b
}alert(a.intro.intro1);在用一个变量之前得先声明了。~