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: 9953|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">
. u4 n/ q! C' K4 X$ b C4 \
<ol>' |4 N! ?( `5 p/ l3 X) i3 S$ E% Q1 T
<li v-for="site in sites">
0 }( }& U' U& F+ x: U/ {7 O( {
{{ site.name }}
) c. N$ W' n$ }% J. E1 _
</li>0 Z( ^9 f$ i% o
</ol>7 w5 r6 i; I0 q$ y0 L2 D. r8 v
</div>7 @0 i& ~3 U0 t) X# z
) r( x$ z9 d8 S0 V, q4 Z
<script>0 u+ u! ], W# U: p9 v
new Vue({0 ^. g% z! o3 H6 X
el: '#app',/ K. ?- M6 n! R
data: {, _+ l6 F5 P+ A
sites: [, ]2 V7 k0 d0 ^
{ name: 'Runoob' },; w. Z6 l! _- F2 ~: _9 g
{ name: 'Google' },8 T8 u i. X) U& s
{ name: 'Taobao' }
9 w$ B I( x0 b- b! N
]
! i- V; q( i5 J6 M- j; n: b
}0 n( |% ~. N4 _1 s4 S! D
})8 [; a' x0 a& p5 O2 y, E! c2 j
</script>

复制代码

模板中使用 v-for：

v-for

<ul>
6 J2 ^7 R5 c# U* R. x
<template v-for="site in sites">
1 h; s7 ~! k% r0 f& e* N% i& d
<li>{{ site.name }}</li>2 P2 ?1 h: z- A" t0 q" o
<li>--------------</li> P# R" _+ m2 U5 w- G
</template>
( `3 o/ N" T2 v, U& F1 U# H
</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;">' m! ^2 J E2 H& p5 ? Q
</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 Q0 D0 g* K" z9 X4 d2 ?
</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;">
* R1 }& _: a* Q7 ?7 D9 W, @
{{ value }}
( |$ J9 a3 D$ T3 K
</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;">" U4 t6 k% Y2 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;">
3 q6 l" F T; y3 K/ Q3 P1 U
</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;">
. l5 e) `6 W; O$ Z# O& M/ e
' G E8 h. }3 c% A
</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;">
$ C6 w; b) o7 ]% U) Q
new Vue({
0 ]1 _; q4 @6 V6 c5 a3 `1 n3 _- e
el: '#app',
. X* Z3 o ]% w0 W8 k
data: {
) I8 F8 u6 |, G& p' ]2 q7 O
object: {! S7 [4 E. F; z p- [7 ? G
name: '菜鸟教程',1 J" A ?# m" y! }& f+ O7 Q
url: 'http://www.runoob.com',
! v% X- l* i& f; {: M- b# {
slogan: '学的不仅是技术，更是梦想！'
5 b8 S) e- o2 @
}/ h2 x' s' [& Q2 O: b% N Q. K
}! I: V8 t$ ?. q
})+ i1 U- u; v6 m/ E# t# 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;">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">5 ^) z0 F& `/ Z- t& y
<ul>6 P" b- W; i3 J; S+ n
<li v-for="(value, key) in object">
3 U( j3 z9 T8 ~+ L- P7 G' ~& Q5 m
{{ key }} : {{ value }}* \1 S9 F7 A3 [, T
</li>( c4 Q. G5 B K+ [8 e: n3 \
</ul>
. {/ r- z8 Q4 [' W7 V
</div>

复制代码

第三个参数为索引：

v-for

<div id="app">1 y0 h2 j- u( H8 A4 n
<ul>; |9 P5 i8 {4 U& J
<li v-for="(value, key, index) in object">
: G: c! E9 m9 ?: X4 K) V
{{ index }}. {{ key }} : {{ value }}
! l1 ]! W6 O6 T1 Q* m
</li>) `4 @: ~5 C; S6 B7 x
</ul>- `: U( `# S5 f$ s
</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">
2 a. \5 d" w2 h6 T' ^: n w. l) _
<ul>2 a- ~2 R) W8 O' k% f9 ~2 a
<li v-for="n in 10">
7 y/ V/ j: z2 K
{{ n }} k/ E6 t! z& Z& j: p, P; S
</li>
/ x# u- C0 V' n- N. s
</ul>
4 F3 Q' p4 |1 r- I
</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, 2026-3-17 20:19 , Processed in 0.076103 second(s), 19 queries .

Copyright © 2001-2026 Powered by cncml! X3.2. Theme By cncml!