最赞回答 / fea
首先在前面你已经定义了二维数组，何来没有表明二维数组，如下代码：<...code...>第二，为什么就知道[3]这个数组？正确来说是infos[i][3],在前面的课程3-1中有提到，数组是一个值的集合，每...
2015-04-16
var f = document.getElementById('f');
document.write(f.nodeName+'='+f.innerHTML+'<br/>')
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document.write(b.nodeName+'='+b.innerHTML+'<br/>')
document.write(f.nodeName+'='+f.innerHTML+'<br/>')
var b = get_previousSibling(f);
document.write(b.nodeName+'='+b.innerHTML+'<br/>')
2015-04-15
function get_previousSibling(n){
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}
2015-04-15
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2015-04-15