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. ...
topic description var a = [1,2,3]; var b = a; a = [4,5,6]; alert(b); [1,2,3] var a = [1,2,3]; var b = a; a.pop(); alert(b); [1,2] topic source Zhihu < hr > a = [4,5,6]; a a.pop(); a b = a; bbaa ab but I don t think it makes s...
problem description < H2 > how does mongoose jointly check and complete the data and then classify and aggregate according to the fields of the joint search? < H2 > I now have two tables: a product table Product , a product category table Category...
totaltab targetNametotaltab[targetName].contactdatatotaltabstatetotal : for example, if you take totaltab [0] .contactdata = = 1, then the two-dimensional array of the first large object in totaltab will become 1, which will not affect the whole total...
I throw an exception when I print a string on the console using logback and jansi. The operating system is window10. maven dependency <dependencies> <!-- --> <dependency> <groupId>ch.qos.logback< groupId&...
dynamically increase or decrease list items in this column, : rules= " {required: true, message: Item + item.index + can not be empty , trigger: blur } " can be validated normally. Modify the settings required: false , type: number , ...