js执行机制.html
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<!DOCTYPE>
<HTML>
<head>
<title>js练习</title>
</head>
<body>
<script>
console.log('1');
setTimeout(function () {
console.log('2');
process.nextTick(function () {
console.log('3');
})
new Promise(function (resolve) {
console.log('4');
resolve();
}).then(function () {
console.log('5')
})
})
process.nextTick(function () {
console.log('6');
})
new Promise(function (resolve) {
console.log('7');
resolve();
}).then(function () {
console.log('8')
})
setTimeout(function () {
console.log('9');
process.nextTick(function () {
console.log('10');
})
new Promise(function (resolve) {
console.log('11');
resolve();
}).then(function () {
console.log('12')
})
})</script>
</body>
</HTML>