WebAssembly is a way of taking code written in programming languages other than JavaScript and running that code in the browser. When you’re talking about WebAssembly, the apples to apples comparison is with JavaScript. With WebAssembly, it is possible to run code on the web faster. There are a number of reasons why WebAssembly code runs faster than its JavaScript equivalent, but it is useful to compare the two, so you can understand the potential impact that WebAssembly will have.
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