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What are these special capabilities of JavaScript? For today’s discussion, there are two major ones:
，这一点在safew官方下载中也有详细论述
（二）业务之间具有明显的主附关系。主要业务居于主体地位，体现交易的实质和目的；附属业务是主要业务的必要补充，并以主要业务的发生为前提。
}After processing the request and updating the inventory in the database, the JSON response body returned to the client includes all the results of the operation.
writev(batch) { for (const c of batch) addChunk(c); },