The problem is caused by the onclick of the <A> label.

Today, a document. getelementbyname () method is used to obtain a set of tag. Tag_a1_1_1_doc u .....

Add an onclick event to each tag.

For (I in tag_a ){

Tag_a [I]. onclick = function (){

Alert (tag_a [I]. Title );

}

}

No response was found. It has been stuck here for a long time. As a result, it turned out to be a small problem through my guidance on the post bar, because the onclick implementation here is through

Anonymous internal class: Alert (tag_a [I]. Title I cannot be read in the anonymous internal class. Therefore, in order to obtain the title of each tag. Change this

Alert (this. Title.

Summary: external variables are not allowed in anonymous internal classes. To access the current node, you must use the this keyword.