doctype html
>
<
html
>
<
head
>
<
meta
charset
="utf-8"
>
<
title
>
title
>
<
style
type
="text/css"
>
*#aa
#a1#a11
#a111
#a12
#a112
#a2#a21
#a22
#bb#b1
#b2#b21
#b211
#b22
#b231
#b224
#b241
#b23
#b24
#b3#b31
#b32
#cc#c
#c1#c11
#c111
#c112
#c113
#c114
#c115
#c12
#c121
#c122
#c123
#c124
#c125
#c1211
#c1212
#c1213
#c1214
#c1215
#c2#c21
#c22
style
>
head
>
<
body
>
<
div
id="aa"
>
1、innerhtml 的基本用法
<
div
id="a1"
>
<
div
id="a11"
>
<
input
type
=""name
="a111"
id="a111"
value
=""/>
div>
<
div
id="a12"
>
<
input
type
="submit"
name
="a112"
id="a112"
value
="提交"
onclick
="b1()"
/>
div>
div>
<
div
id="a2"
>
<
div
id="a21"
>
提交後在這裡顯示：
div>
<
div
id="a22"
>
div>
div>
div>
<
div
id="bb"
>
<
div
id="b1"
>
2、innerhtml、字串、判斷的基本應用
div>
<
div
id="b2"
>
<
div
id="b21"
>
<
input
type
=""name
="b211"
id="b211"
value
=""/>
div>
<
div
id="b22"
>
+
div>
<
div
id="b23"
>
<
input
type
=""name
="b231"
id="b231"
value
=""/>
div>
<
div
id="b24"
>
<
input
type
="submit"
name
="b241"
id="b241"
value
="提交"
onclick
="b2()"
/>
div>
div>
<
div
id="b3"
>
<
div
id="b31"
>
提交後在這裡顯示：
div>
<
div
id="b32"
>
div>
div>
div>
<
div
id="cc"
>
3、陣列輸出練習
<
div
id="c1"
>
<
div
id="c11"
>
<
div
id="c111"
>
已知陣列內容：
div>
<
div
id="c112"
>
1、這是第一句話
div>
<
div
id="c113"
>
2、這是第二句話
div>
<
div
id="c114"
>
3、這是第三句話
div>
<
div
id="c115"
>
4、這是第四句話
div>
div>
<
div
id="c12"
>
<
div
id="c121"
>
<
input
type
="submit"
name
="c1211"
id="c1211"
value
="提取1"
onclick
="b3()"
/>
div>
<
div
id="c122"
>
<
input
type
="submit"
name
="c1212"
id="c1212"
value
="提取2"
onclick
="b4()"
/>
div>
<
div
id="c123"
>
<
input
type
="submit"
name
="c1213"
id="c1213"
value
="提取3"
onclick
="b5()"
/>
div>
<
div
id="c124"
>
<
input
type
="submit"
name
="c1214"
id="c1214"
value
="提取4"
onclick
="b6()"
/>
div>
<
div
id="c125"
>
<
input
type
="submit"
name
="c1215"
id="c1215"
value
="全部彈出提取"
onclick
="b7()"
/>
div>
div>
div>
<
div
id="c2"
>
<
div
id="c21"
>
提交後在這裡顯示：
div>
<
div
id="c22"
>
div>
div>
div>
body
>
html
>
<
script
type
="text/j**ascript"
>
function
b1()
function
b2()
function
b3()
function
b4()
function
b5()
function
b6()
function
b7()
script
>
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css可以把多個樣式加到同乙個元素上。如果多個樣式有重合，瀏覽器會根據權重的大小進行樣式覆蓋，這就是層疊樣式表的由來。下面我們先來看一下疊加是怎麼回事。doctype html html lang en head meta charset utf 8 meta name viewport conte...
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