代码示例:(标识:eg_js_number_inaccurate_1)
<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 数字</h1>

<p>整数(不使用指数或科学计数法)会被精确到 15 位:</p>

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

<script>
var x = 999999999999999;
var y = 9999999999999999;
document.getElementById("demo").innerHTML = x + "<br>" + y;
</script>

</body>
</html>
运行结果: