machinecat520
/
zj-Exercise


			
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    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>

        var n1 = 10 , n2 = 20;
        var n = n1++;
        console.log('n='+n);//10
        console.log('n1='+n1);//11
        n = ++n1;
        console.log('n='+n);//12
        console.log('n1='+n1);//12
        n = n2--;
        console.log('n='+n);//20
        console.log('n2='+n2);//19
        n = --n2;
        console.log('n='+n);//18
        console.log('n2='+n2);//18


    </script>
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