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<p id="demo">单击按钮显示不同数值的Math.exp()的结果。</p>
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<button onclick="myFunction()">点我</button>
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<script>
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function myFunction() {
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var a = Math.exp(-1);
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var b = Math.exp(5);
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var c = Math.exp(10);
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var x = document.getElementById("demo");
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x.innerHTML = a + "<br>" + b + "<br>" + c;
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}
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</script>