javascript - 神秘(对我来说) "object doesn' t 支持此属性或方法错误 - JavaScript HTML 推出

Question

我从第四行的字符 1 中收到上述错误...不知道是什么抛出了它？我确信这是我看不到的简单事情......

out = out + "<b>Select Box Information</b><br><br> The name of the select box is: skeletor. A play on the word selector.<br>"
out = out + "The options for the select box are, Default Value, Option 2, Option 3, Option 4 and Option 5.<br>"
out = out + "The values for each option, from top to bottom, are: " + lucy.skeletor.option(0) + ", "
out = out + lucy.skeletor.option(1) + ", " + lucy.skeletor.option(2) + ", " + lucy.skeletor.option(3)
out = out + ", " + lucy.skeletor.option(4) + ".<br><br>"
out = out + "The index of the first option in the select box is: 0. The location of the user-selected option is: " + lucy.skeletor.value + ".<br><br>"

Answer 1

我认为lucy.skeletor.option(1)将是这里的问题。如果lucy.skeletor是一个真正的select元素，它包含一个options数组。可以像这样引用该数组:lucy.skeletor.options[n]

此外，如果你连接，你可以这样做:

out += somestring+someotherstring+morestrings ... etc