javascript - emscript, async 与 await (看另一个,搜索 promise, async)
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https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Statements/async_function
await 只能用在async 函数中, 能让该async函数暂停。并出让它的控制权。
例如:
function resolve_after_2s(){ return new Promise( resolve => { setTimeout(() => { resolve('resolved'); }, 2000); } ) } async function myCall(){ console.info("step1") let result = await resolve_after_2s() console.info("step2, " , result) }