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<!DOCTYPE html>
<html>
<body>
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<h1>JavaScript 数组方法</h1> 
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<h2>shift()</h2>
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<p>shift() 方法返回被移出的元素。</p>
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<p id="demo1"></p>
<p id="demo2"></p>
<p id="demo3"></p>
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<script>
var fruits = ["Banana", "Orange", "Apple", "Mango"];
document.getElementById("demo1").innerHTML = fruits;
document.getElementById("demo2").innerHTML = fruits.shift();
document.getElementById("demo3").innerHTML = fruits;
</script>
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</body>
</html>
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