您尚未登录,请登录后浏览更多内容！登录 | 立即注册

只需一步，快速开始

cncml手绘网»论坛 › 站长博文 › 学习笔记 › 循环语句

发新帖

查看: 6343|回复: 0

上一主题

下一主题

[Vue.js] 循环语句

电梯直达

跳转到指定楼层

楼主

发表于 2018-7-4 10:56:27 | 只看该作者回帖奖励

回帖奖励

|倒序浏览 |阅读模式

循环使用 v-for 指令。

v-for 指令需要以 site in sites 形式的特殊语法， sites 是源数据数组并且 site 是数组元素迭代的别名。

v-for 可以绑定数据到数组来渲染一个列表：

v-for 指令

<div id="app">1 C3 f0 Z$ O% D, z2 c3 P) w
<ol>( e: {, s: L% A' J! t" P/ U! p
<li v-for="site in sites">
5 V8 m) H8 g& a5 M) {/ R E
{{ site.name }}( R0 Q4 b) ^" X5 m. }8 d
</li>! B; j0 h3 g: u" T! G1 \
</ol>
5 h6 v5 R& q/ K- \# R* d5 q
</div> H( C: b( I E2 r+ g: |$ A
9 @" n' ~3 k. |+ C- x4 _" b/ v
<script>1 l& a$ @0 @4 u# j8 Y" j7 \
new Vue({7 w8 r" C3 F; v- M" X8 o* P
el: '#app',
- k2 X/ I2 E1 l- l- b
data: {
0 M- d+ B( C/ V+ O& `, I0 W
sites: [
4 q m A+ P$ D+ s% {
{ name: 'Runoob' },
) Q! g: q6 U; ]- y2 q" {# M/ F4 |+ j
{ name: 'Google' },
t0 g3 _. @0 X% N/ t5 E6 x% {9 q
{ name: 'Taobao' }
% M4 K" h! r4 _! _" a& i6 V
]
& N$ z+ J8 R6 a
}# L+ B3 d8 l( d/ E8 u, P7 v: N
})
/ l" |& s( ^/ D- E; m8 `$ K
</script>

复制代码

模板中使用 v-for：

v-for

<ul>
6 D% L& I" o; A5 h5 g( w
<template v-for="site in sites">) F1 f. t6 r1 B) ]" Z
<li>{{ site.name }}</li>, o$ x! H' O( o) R! O+ j' v3 e
<li>--------------</li>) C9 x0 K' s# _; T
</template>9 z% X5 d8 r7 k+ @
</ul>

复制代码

v-for 迭代对象

v-for 可以通过一个对象的属性来迭代数据：

v-for

<div><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;"><</span><span class="hl-reserved" style="border: 0px; color: green; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">div</span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;"> </span><span class="hl-var" style="border: 0px; color: rgb(0, 0, 139); font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">id</span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">=</span><span class="hl-quotes" style="border: 0px; color: rgb(139, 0, 0); font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">"</span><span class="hl-string" style="border: 0px; color: rgb(170, 17, 17); font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">app</span><span class="hl-quotes" style="border: 0px; color: rgb(139, 0, 0); font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">"</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">></span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">
" h5 Z2 v" d4 Y5 \% l7 [# B
</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;"><</span><span class="hl-reserved" style="border: 0px; color: green; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">ul</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">></span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">
2 A7 H5 ~ }. j
</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;"><</span><span class="hl-reserved" style="border: 0px; color: green; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">li</span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;"> </span><span class="hl-var" style="border: 0px; color: rgb(0, 0, 139); font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">v-for</span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">=</span><span class="hl-quotes" style="border: 0px; color: rgb(139, 0, 0); font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">"</span><span class="hl-string" style="border: 0px; color: rgb(170, 17, 17); font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">value in object</span><span class="hl-quotes" style="border: 0px; color: rgb(139, 0, 0); font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">"</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">></span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">
4 u# \( [; [( u8 W6 |
{{ value }}
2 L6 A: `; H) H6 R( ` N5 b
</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;"></</span><span class="hl-reserved" style="border: 0px; color: green; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">li</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">></span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">
9 r m$ o z$ j+ E2 j% X
</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;"></</span><span class="hl-reserved" style="border: 0px; color: green; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">ul</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">></span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">; u; W" H. I+ h0 e! t; ^. {
</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;"></</span><span class="hl-reserved" style="border: 0px; color: green; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">div</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">></span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">: d. z* G5 q. o) O& \
) z9 P1 s$ u& y" z5 l* r1 w
</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;"><</span><span class="hl-reserved" style="border: 0px; color: green; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">script</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">></span><span class="hl-code" style="border: 0px; color: gray; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">
( q" z5 V+ X% b, T7 Z# u
new Vue({
3 n2 v% L/ g1 w+ ~
el: '#app',7 ?3 y. g8 m, w
data: {
2 y1 N+ G/ }+ g9 @5 [9 s& }
object: {5 C' C/ `2 ^0 d1 d$ `# p
name: '菜鸟教程',8 x2 j. N" P9 S* e
url: 'http://www.runoob.com',
. |4 T+ w0 r# ^
slogan: '学的不仅是技术，更是梦想！'
) x, u0 j. U- ^9 @7 f2 {
}* E; x& l7 i) P( u
}
% x; s, U, f- c4 u6 @9 I5 ]7 Q) Z! T
})# U+ K4 c4 h; v
</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;"></</span><span class="hl-reserved" style="border: 0px; color: green; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">script</span><span class="hl-brackets" style="border: 0px; color: olive; font-family: Menlo, Monaco, Consolas, "Andale Mono", "lucida console", "Courier New", monospace; font-size: 13.2px; white-space: pre-wrap;">></span></div><div></div>

复制代码

你也可以提供第二个的参数为键名：

v-for

<div id="app">4 y* e4 o: l l" ^. v1 z6 v' J
<ul>1 P" f1 c5 e7 c' p6 G
<li v-for="(value, key) in object">
# y A" x+ U6 o9 R
{{ key }} : {{ value }}& I8 R* i, i& T) ], h. f
</li>( C/ X0 J& o. Q) H1 K
</ul>+ a% d. I, K2 `* r, J; C! i
</div>

复制代码

第三个参数为索引：

v-for

<div id="app">
! _6 q4 J# n& u
<ul>
& I4 O/ W) j4 P: I# \# \2 y/ ?3 X( N1 ?
<li v-for="(value, key, index) in object">5 M( w6 d% k+ R h3 C
{{ index }}. {{ key }} : {{ value }}
9 r' ?( ^. H: k# M5 v/ \
</li>
- Y0 Q9 Y4 n; ~+ b
</ul>
1 [% l& D: h# K& X) K, f
</div>

复制代码

v-for 迭代整数

v-for 也可以循环整数

v-for

<div id="app">
L$ ^3 Y+ w) Q
<ul>
+ P& O2 e N4 {' S/ k( A! I
<li v-for="n in 10">8 O) ]8 E9 N, e6 x& d/ L
{{ n }}( `$ N, Z3 |2 {9 @
</li> s9 r8 U2 r% W; }& a( j; U- r+ J
</ul>; }* W& G" Y) U& q+ @% e
</div>

复制代码

分享到: QQ好友和群 QQ空间 腾讯微博 腾讯朋友

收藏0 分享 支持0 反对0

回复

使用道具举报

发新帖

|

|

|

|

备案信息代码：冀ICP备18019919号-1

GMT+8, 2024-6-18 21:00 , Processed in 0.108416 second(s), 20 queries .

Copyright © 2001-2024 Powered by cncml! X3.2. Theme By cncml!