let ar = [1,2,3]
//
// 1[2[3]]
let ar = [1,2,3]
//
// 1[2[3]]it can be done by using the methods built into the array:
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vue and react use ssr (server-side rendering) to solve seo and first-screen rendering solutions. this extends the problem. 80% of the data after http or other network requests is duplicated, and http caching is also a big problem? how do you solve the...