Repeat exercise 2 using the above method . 用上例的方法重做練習(xí)二。
In the following extension of the preceding example , the 下例為上例的擴展,
The following shows the rendering for the example from above , but for a browser that does not support styles 以下顯示了不支持樣式的瀏覽器對于上例的呈現(xiàn)結(jié)果:
Despite their common occurrence , the use of null flags is very often unwarranted as in the case above 盡管這種錯誤模式經(jīng)常出現(xiàn),使用空標(biāo)志仍是非常沒有根據(jù)的(與上例的情況一樣) 。