清单1相当简单；清单4稍微有点复杂，但是它们在开始时都要检查就绪状态，并获取responsetext属性的值。

Listing 1 is fairly simple; Listing 4 is a little more complicated, but to begin, both check the ready state and then grab the value (or values) in the responseText property.

youdao

清单1相当简单；清单4稍微有点复杂，但是它们在开始时都要检查就绪状态，并获取responsetext属性的值。

Listing 1 is fairly simple; Listing 4 is a little more complicated, but to begin, both check the ready state and then grab the value (or values) in the responseText property.

youdao