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</html>按照書(shū)上敲的代碼，為什么預(yù)覽大圖效果不能正常顯示？圖一是書(shū)上正確效果，圖二是自己寫(xiě)的呈現(xiàn)效果（鼠標(biāo)預(yù)覽效果），請(qǐng)教下，這是什么問(wèn)題。
預(yù)覽大圖效果為什么不能正常顯示？
小布ever
2017-02-21 17:38:25
