测试变量是一个YouTube链接从我试图提取pa14VNsdSYM
的JavaScript .search后&V没有返回值=
var test = "http://www.youtube.com/watch?feature=endscreen&NR=1&v=pa14VNsdSYM";
var urll = (test.search(/[?&;]v=([^&;]+)/) || [])[1];
document.write(''+urll+'');
但我只得到undefined
http://jsfiddle.net/ZGjDb/13/