如何使用JS实现针对特定DOM元素的实时resize监听？

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javascripttry { let resizeObserver=new ResizeObserver(entries=> { console.log('resize', entries); }); resizeObserver.observe(this);} catch (e) { console.log(e);}

try {
let resizeObserver = new ResizeObserver(entries => {
console.log('resize', entries)
})
resizeObserver.observe(this)
} catch (e) {
console.log(e)
}