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<title>菜鸟教程(runoob.com)</title>
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<h1>JavaScript Numbers</h1>
<h2>Number.isInteger() 方法</h2>

<p>Number.isInteger() 函数用于检测指定参数是否为无整数，如果是整数返回 true，否则返回 false。</p>

<p id="demo"></p>

<script>
let result =
"0 是否为整数? " + Number.isInteger(0) + "<br>" +
"0/0 是否为整数? " + Number.isInteger(0/0) + "<br>" +
"0.5是否为整数? " + Number.isInteger(0.5) + "<br>" +
"false 是否为整数? " + Number.isInteger(false) + "<br>" +
"Infinity是否为整数? " + Number.isInteger(Infinity) + "<br>" +
"-Infinityo 是否为整数? " + Number.isInteger(-Infinity) + "<br>" +
"NaN 是否为整数? " + Number.isInteger(NaN);

document.getElementById("demo").innerHTML = result;
</script>

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