双重for循环

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<script>
    for(let i=1;i<=3;i++){
        console.log('%c我是外层循环我执行了'+i+'遍',"color:red");
        for(let n = 1;n<=2;n++){
            console.log('我是内层循环我执行了'+n+'遍');
        }
    }
</script>