js正则一问

Question

function test12()
{
var r1=/word1([.*?]+)word2/; 
var str1="word1need1word2word1need2word2";
var arr;
arr=r1.exec(str1);
arr=r1.exec(str1);
window.alert(arr[1]);
}
test12();无法得到need2，只能得到need1

Answer 1

function test12()
{
var r1=/word1(.*?)word2/; 
var str1="word1need1word2word1need2word2";
var arr;
arr=r1.exec(str1);
arr=r1.exec(str1);
window.alert(arr[1]);
}更正一下

Answer 2

已经解决
改成/word1(.*?)word2/g即可