gitHub地址:https://github.com/lily1010/vue_learn/tree/master/lesson05
一 过滤器写法
{{ message | Filter}}
二 Vue自带的过滤器:capitalize
功能:首字母大写
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Vue自带的过滤器</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div class="test">
{{message | capitalize}}
</div>
<script type="text/javascript">
var myVue = new Vue({
el: ".test",
data: {
message: "abc"
}
})
</script>
</body>
</html>
上面代码输出:Abc
三 Vue自带的过滤器:uppercase
功能:全部大写
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Vue自带的过滤器</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div class="test">
{{message | uppercase}}
</div>
<script type="text/javascript">
var myVue = new Vue({
el: ".test",
data: {
message: "abc"
}
})
</script>
</body>
</html>
上面代码输出:ABC
四 Vue自带的过滤器:uppercase
功能:全部小写
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Vue自带的过滤器</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div class="test">
{{message | lowercase}}
</div>
<script type="text/javascript">
var myVue = new Vue({
el: ".test",
data: {
message: "ABC"
}
})
</script>
</body>
</html>
上面代码输出:abc
五 Vue自带的过滤器:currency
功能:输出金钱以及小数点
参数:
第一个参数 {String} [货币符号] - 默认值: ‘$‘
第二个参数 {Number} [小数位] - 默认值: 2
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Vue自带的过滤器</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div class="test">
{{message | currency}} <!--输出$123.47-->
{{message | currency ‘¥‘ "1"}} <!--输出$123.5-->
</div>
<script type="text/javascript">
var myVue = new Vue({
el: ".test",
data: {
message: "123.4673"
}
})
</script>
</body>
</html>
六 Vue自带的过滤器:pluralize
功能: 如果只有一个参数，复数形式只是简单地在末尾添加一个 “s”。如果有多个参数，参数被当作一个字符串数组，对应一个、两个、三个…复数词。如果值的个数多于参数的个数，多出的使用最后一个参数。
参数：{String} single, [double, triple, ...
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Vue自带的过滤器</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div class="test">
{{message}} {{message | pluralize ‘item‘}} <!--输出: 1 item-->
<ul v-for="item in lili">
<li>
{{item}} {{item | pluralize ‘item‘}} <!--输出: 1 item 2 items 3 items-->
</li>
</ul>
<ul v-for="item in lili">
<li>
{{item}} {{item | pluralize ‘st‘ ‘rd‘}} <!--输出: 1 st 2 rd 3 rd-->
</li>
</ul>
<ul v-for="item in man">
<li>
{{item}} {{item | pluralize ‘item‘}} <!--输出: 1 item 2 items 3 items-->
</li>
</ul>
<ul v-for="item in man">
<li>
{{item}} {{item | pluralize ‘st‘ ‘rd‘}} <!--输出: 1 st 2 rd 3 rd-->
</li>
</ul>
</div>
<script type="text/javascript">
var myVue = new Vue({
el: ".test",
data: {
message: 1,
lili: [1,2,3],
man: {
name1: 1,
name2: 2,
name3: 3
}
}
})
</script>
</body>
</html>
七 Vue自带的过滤器:debounce
(1)限制： 需在@里面使用
(2)参数:{Number} [wait] - 默认值： 300
(3)功能：包装处理器，让它延迟执行 x ms， 默认延迟 300ms。包装后的处理器在调用之后至少将延迟 x ms， 如果在延迟结束前再次调用，延迟时长重置为 x ms。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Vue自带的过滤器</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div class="test">
<button id="btn" @click="disappear | debounce 10000">点击我,我将10秒后消失</button>
</div>
<script type="text/javascript">
var myVue = new Vue({
el: ".test",
methods: {
disappear: function () {
document.getElementById("btn").style.display= "none";
}
}
})
</script>
</body>
</html>
八 Vue自带的过滤器:limitBy
(1)限制:需在v-for(即数组)里面使用
(2)两个参数:
第一个参数:{Number} 取得数量
第二个参数:{Number} 偏移量
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Vue自带的过滤器</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div class="test">
<ul v-for="item in lili | limitBy 10"> <!--输出1 2 3 4 5 6 7 8 9 10-->
<li>{{item}}</li>
</ul>
<ul v-for="item in lili | limitBy 10 3"> <!--输出 4 5 6 7 8 9 10 11 12 13-->
<li>{{item}}</li>
</ul>
</div>
<script type="text/javascript">
var myVue = new Vue({
el: ".test",
data: {
lili: [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]
}
})
</script>
</body>
</html>
九 Vue自带的过滤器:filterBy
(1)限制:需在v-for(即数组)里面使用
(2)三个参数:
第一个参数: {String | Function} 需要搜索的字符串
第二个参数: in (可选,指定搜寻位置)
第三个参数: {String} (可选,数组格式)
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Vue自带的过滤器</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<div class="test">
<ul v-for="item in lili | filterBy ‘o‘ "> <!--输出oi oa lo ouo oala-->
<li>{{item}}</li>
</ul>
<ul v-for="item in man | filterBy ‘l‘ in ‘name‘ "> <!--输出lily lucy-->
<li>{{item.name}}</li>
</ul>
<ul v-for="item in man | filterBy ‘l‘ in ‘name‘ ‘dada‘ "> <!--输出lily+undefined lucy+undefined undefined+lsh-->
<li>{{item.name+"+"+item.dada}}</li>
</ul>
</div>
<script type="text/javascript">
var myVue = new Vue({
el: ".test",
data: {
lili: ["oi", "oa", "ll", "lo" ,"ouo" ,"kk" ,"oala"],
man: [ //此处注意man是数组,不是对象
{name: "lily"},
{name: "lucy"},
{name: "oo"},
{dada: "lsh"},
{dada: "ofg"}
]
}
})
</script>
</body>
</html>
时间： 2024-11-05 15:38:22