CSS 換行知多少: word-wrap && word-break && white-space && word-spacing
Jun 10, 2016 pm 03:03 PMword-wrap :
首先提一下,word-wrap 這個(gè) CSS 屬性在CSS3中已經(jīng)被更名為 overflow-wrap,這樣語義化也是為了避免與 word-break 混淆;
- Reference:
- The?
<strong>overflow</strong>
-wrap
?property is used to specify whether or not the browser may break lines within words in order to prevent overflow when an otherwise unbreakable string is too long to fit in its containing box. - 這貨就是在行尾放不下一個(gè)單詞的時(shí)候,決定單詞內(nèi)部是不是允許換行的家伙;
- The?
- Values:
- normal:
- 單詞太長(zhǎng),我就換行試下,結(jié)果換行以后還長(zhǎng),這貨就撂挑子不干了,勞資不給換了,直接暴力地給你戳出來。
- break-word:
- 單詞太長(zhǎng),就換行,換行以后還是長(zhǎng),咱就再換,老好人,換到你滿意;
- normal:
?
word-break:
- Reference :
- The?
word-break
?CSS property is used to specify whether to break lines within words. - 這貨是用來決定在單詞內(nèi)怎么換行的;
- The?
- Values:
- Normal:
- 使用默認(rèn)的換行規(guī)則
- break-all:
- 允許任意非CJK(Chinese/Japanese/Korean)文本間的單詞斷行。
- keep-all:
- 不允許CJK(Chinese/Japanese/Korean)文本中的單詞換行,只能在半角空格或連字符處換行。非CJK文本的行為實(shí)際上和
normal
一致。
- 不允許CJK(Chinese/Japanese/Korean)文本中的單詞換行,只能在半角空格或連字符處換行。非CJK文本的行為實(shí)際上和
- Normal:
?
word-wrap:break-word VS word-break:break-all
看到這可能有的小伙伴要爆粗了,“臥槽,尼瑪給我看這個(gè)是說在這兩個(gè)貨是雙胞胎一樣一樣兒的嗎,讀少勿騙,辣雞!”
這倆貨自然是不同的,不然 W3C 就不會(huì)費(fèi)勁兒讓前者更名改姓來區(qū)分二者了。
下面請(qǐng)看圖說話:
?
我們對(duì)比#test1 和 #test2 很容易發(fā)現(xiàn)其中不同:
break-all 很暴力,管你什么單詞,說了是 all,通通換行;
但是相比之下 break-word 就溫柔很多了,如果放不下,先看下本行有沒有可以換行的地方,比如空格或者 CJK,如果有就放過單詞,在該點(diǎn)換行,如果沒有在進(jìn)行詞內(nèi)換行;
white-space:
上文說了,word-wrap:break-word 在進(jìn)行詞內(nèi)換行之前會(huì)確認(rèn)本行是否存在換行點(diǎn),其中就包括空格或者回車。
所以又有一個(gè)家伙專門控制著空格和回車的宿命:
空格是否合并 ;
回車是否解釋成折行;
句子太長(zhǎng)是否在空格處折行;
Values:
normal :?空白會(huì)被瀏覽器忽略;
pre : 空白會(huì)被瀏覽器保留;
nowrap : 文本不會(huì)換行,直到遇到
標(biāo)簽為止;
pre-wrap : 保留空白序列,正常的進(jìn)行換行;
pre-line : 合并空白序列,保留換行符;
inherit :繼承父元素的特征。
?
?word-spacing:
這哥們兒跟上面幾個(gè)關(guān)系不大,只是長(zhǎng)得有點(diǎn)像而已,是設(shè)置單詞間距的,用法也超級(jí)簡(jiǎn)單:
p{
word-spacing:30px;
}
看到有木有這感覺 CSS 有那么一點(diǎn)點(diǎn)的小變態(tài)呢,沒辦法,誰叫這玩意兒就是靠積累的呢 ╮(╯_╰)╭
?

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