Hi, I am building an educational site and would like to implement fill-in-the-blank functions. For example, after reading a paragraph, the user will have a sentence like, “Jack took the to see his parents.” When the user single click on the blank space, the word “train” appears, so the sentence reads, “Jack took the train to see his parents.” and the word “train” remains visible from then on.
Three questions please:
1.
What is the most best way to do this without using java?
If Java needs to be used, how can it be done?
Would the site be penalized by Google and the other SE spiders for the fact that some of the words will be invisible at the start?
TIA