以下代码执行后输出结果为()?<divid="box1">&l...
发布于 2022-03-03 14:01:45
以下代码执行后输出结果为( )?
<div id="box1">
<div id="box2">
content
</div>
</div>
<script>
const $ = document.querySelector.bind(document)
const box1 = $('#box1')
const box2 = $('#box2')
box1.addEventListener('click', () => {
console.log('box1 true')
}, true)
box1.addEventListener('click', () => {
console.log('box1 false')
}, false)
box2.addEventListener('click', () => {
console.log('box2 true')
}, true)
box2.addEventListener('click', () => {
console.log('box2 false')
}, false)
</script>
<div id="box1">
<div id="box2">
content
</div>
</div>
<script>
const $ = document.querySelector.bind(document)
const box1 = $('#box1')
const box2 = $('#box2')
box1.addEventListener('click', () => {
console.log('box1 true')
}, true)
box1.addEventListener('click', () => {
console.log('box1 false')
}, false)
box2.addEventListener('click', () => {
console.log('box2 true')
}, true)
box2.addEventListener('click', () => {
console.log('box2 false')
}, false)
</script>
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