js的幾個(gè)簡(jiǎn)單函數(shù) 1.toFixed(n)函數(shù)，四舍五入保留n位小數(shù)點(diǎn)var a = 133.55644444;var b = a.toFix...
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js的幾個(gè)簡(jiǎn)單函數(shù) 1.toFixed(n)函數(shù)，四舍五入保留n位小數(shù)點(diǎn)var a = 133.55644444;var b = a.toFix...
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