parseInt(string)和Number(string)JavaScript有什么区别？
我有一个DOM这样的
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<p>A car averages 27 miles per gallon. If gas costs $4.04 per gallon, which of the following is closest to how much the gas would cost for this car to travel 2,727 typical miles?</p>
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我只想为所有数字添加 span 标签，例如
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<p>A car averages <span> 27 </span> miles per gallon. If gas costs $<span>4.04</span> per gallon, which of the following is closest to how much the gas would cost for this car to travel <span>2,727</span> typical …