this is a comment page of a school curriculum grading system. I want to do this: 1. Count the number of words in each comment 2. When the whole loop is over, count out the total number of words of all comments < div id= "header " > < H1 > Course R...
I am a novice. At present, I have encountered some confusion when learning set data types in Es6, as follows: in the Es6 about Ruan Yifeng, it is mentioned that set types can be used to intersect and judge sets, but I have tried it unsuccessfully. ...
when not printing ...
for example, now that there is a feature that is red, how can I change its style? I use feature.getStyle (). GetImage (). GetFill (). SetColor ( "blue "); the color item of printing feature has turned blue, but it is still red. Why? how can I change t...
regular matching can only be numeric letters, where the start and end match. let reg2= ^ [a-zA-Z0-9] + $ let reg1= [a-zA-Z0-9]+ ; let reg2= ^[a-zA-Z0-9]+$ ; ? console.log(reg1.test( )); false console....
want to do this use @ Autowired to inject a map in the service layer let Spring scan automatically, and use key to fetch the injected classes in map, which is equivalent to policy mode . the newly added module is annotated with @ Service ( "key ") ...
recently I plan to do an animation of H5. The type of display is as follows: Shakespeare H5 . Ask the bosses what better technical selection scheme or recommended framework! My current strategy is to use CSS3 + Canvas to do it and ask for communication....