document.getElementByID('p1').style.color="blue"; 为什么第一段文字没有变蓝色?
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document.getElementByID('p1').style.color="blue"; Why doesn't the first paragraph of text turn blue? -PHP Chinese website Q&A-document.getElementByID('p1').style.color="blue"; Why doesn't the first paragraph of text turn blue? -PHP Chinese website Q&A

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迷茫

document.getElementById('p1').style.color="blue"这样才对,document.getElementById()中的Id大小写有误

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