溫馨提示×
您好，登錄后才能下訂單哦！
點擊 登錄注冊 即表示同意《億速云用戶服務條款》
您好，登錄后才能下訂單哦！
本文小編為大家詳細介紹“Vue中怎么使用Validator表單驗證插件”，內容詳細，步驟清晰，細節處理妥當，希望這篇“Vue中怎么使用Validator表單驗證插件”文章能幫助大家解決疑惑，下面跟著小編的思路慢慢深入，一起來學習新知識吧。
基本使用
<div id="app">
<validator name="validation">
<form novalidate>
<div class="username-field">
<label for="username">username:</label>
<input type="text" id="username" v-validate:username="['required']" />
</div>
<div class="comment-filed">
<label for="comment">comment:</label>
<input type="text" id="comment" v-validate:comment="{maxlength: 256}" />
</div>
<div class="errors">
<p v-if="$validation.username.required">請輸入你的名字</p>
<p v-if="$validation.comment.maxlength">您的評論太長了</p>
</div>
<input type="submit" value="send" v-if="$validation.valid" />
</form>
</validator>
</div>
<script src="//cdn.bootcss.com/vue/1.0.24/vue.js" type="text/javascript" charset="utf-8"></script>
<script src="//cdn.bootcss.com/vue-validator/2.1.3/vue-validator.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
new Vue({
el: '#app'
});
</script>將要驗證的表單包裹在validator自定義元素指令中，而在要驗證的表單控件元素的 v-validate 屬性上綁定相應的校驗規則。
驗證結果會保存在組建實例的 $validation 屬性下。 $validation 是由 validator 元素和 name 屬性和 $ 前綴組件
驗證結果結構
{
// 表單整體驗證
"valid": false, // 字段校驗是否通過
"invalid": true, // valid 取反
"touched": false, // 校驗字段所在元素獲得通過焦點時返回true，否則返回false
"untouched": true, // touched 取反
"modified": false, // 當元素值與初始值不同時返回true，否則返回false
"dirty": false, // 字段值改變過至少一次返回true，否則返回false
"pristine": true, // dirty 取反
// 字段單一驗證
"username": {
"required": true,
"modified": false,
"pristine": true,
"dirty": false,
"untouched": true,
"touched": false,
"invalid": true,
"valid": false
},
"comment": {
"maxlength": false,
"modified": false,
"pristine": true,
"dirty": false,
"untouched": true,
"touched": false,
"invalid": false,
"valid": true
}
}校驗結果由兩部分組成。表單整體校驗結果和單個字段校驗結果。
驗證器語法
v-validate 指令語法：
v-validate[:field]=”array literal | object literfal | binding”
校驗字段名field
field用來標識校驗字段，之后可以用該字段來引用校驗結果
v-validate 指令用來定義校驗規則，其值可以是數組字面量，對象字面量，組件實例數組屬性名。
數組字面量
當校驗器不需要額外參數時，可以使用數組字面量形式，如 required 校驗器，只要出現就帶I表該校驗器所在元素是必填項。
<div id="app"> <validator name="validation"> <form novalidate> Zip: <input type="text" v-validate:zip="['required']" /><br /> <div> <span v-if="$validation.zip.required">郵政編碼是必填項</span> </div> </form> </validator> </div>
對象字面量
對象字面量語法適合需要額外參數的校驗器。如限制輸入長度的校驗器 minlength,需要說明限制長度多少。
<div id="app">
<validator name="validation">
<form novalidate>
ID: <input type="text" v-validate:id="{ required:true, minlength: 3, maxlength: 16 }" />
<br />
<div>
<p v-if="$validation.id.required">ID不能為空</p>
<p v-if="$validation.id.minlength">你的ID名字太短</p>
<p v-if="$validation.id.maxlength">你的ID名字太長</p>
</div>
<input type="submit" value="send" v-if="$validation.valid" />
</form>
</validator>
</div>還可以用 對象字面量語法通過 rule 字段來自定義驗證規則
<div id="app">
<validator name="validation">
<form novalidate>
ID: <input type="text" v-validate:id="{minlength: {rule: 3}, required: true, maxlength: {rule: 16}}" />
<br />
<div>
<p v-if="$validation.id.required">ID不能為空</p>
<p v-if="$validation.id.minlength">你的ID名字太短</p>
<p v-if="$validation.id.maxlength">你的ID名字太長</p>
</div>
<input type="submit" value="send" v-if="$validation.valid" />
</form>
</validator>
</div>實例數據屬性
v-validate 的值可以是組建實例的數據屬性。這樣可以用來動態綁定校驗規則。
<div id="app">
<validator name="validation">
<form novalidate>
ID: <input type="text" v-validate:id="rules" /><br />
<div>
<p v-if="$validation.id.required">不能為空</p>
<p v-if="$validation.id.minlength">你的ID太短</p>
<p v-if="$validation.id.maxlength">你的ID太長</p>
</div>
</form>
</validator>
</div>
<script src="//cdn.bootcss.com/vue/1.0.24/vue.js" type="text/javascript" charset="utf-8"></script>
<script src="//cdn.bootcss.com/vue-validator/2.1.3/vue-validator.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
new Vue({
el: '#app',
data: {
rules: {
required: true,
minlength: 3,
maxlength: 16
}
}
});
</script>內置校驗規則
vue-validator 內置一些常用的驗證規則：
required — 輸入值不能為空
pattern — 必須匹配pattern表示的正則表達式
minlength — 輸入值長度不能小于minlength表示的值
maxlength — 輸入的值不能大于maxlength表示的值
min — 輸入值不能小于min表示的值
max — 輸入值不能大于max表示的值
與v-model同時使用
vue-validator會自動校驗通過v-model動態設置的值。
<div id="app">
<validator name="validation">
<form novalidate>
message: <input type="text" v-model="msg" v-validate:message="{required: ture, minlength: 8}" />
<br />
<p v-if="$validation.message.required">message不能為空</p>
<p v-if="$validation.message.minlength">message輸入太長位數</p>
</form>
</validator>
</div>
<script src="//cdn.bootcss.com/vue/1.0.24/vue.js" type="text/javascript" charset="utf-8"></script>
<script src="//cdn.bootcss.com/vue-validator/2.1.3/vue-validator.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
var vm = new Vue({
el: '#app',
data: {
msg: ''
}
});
setTimeout(function () {
vm.msg = 'hello world!';
}, 2000);
</script>重置校驗結果
通過在Vue組件實例上調用$resetValidation();方法來動態重置校驗結果。
<div id="app">
<validator name="validation">
<form novalidate>
<div class="username-field">
<label for="username">username:</label>
<input type="text" id="username" v-validate:username="['required']" />
</div>
<div class="comment-filed">
<label for="comment">comment:</label>
<input type="text" id="comment" v-validate:comment="{maxlength: 256}" />
</div>
<div class="errors">
<p v-if="$validation.username.required">用戶名不能為空</p>
<p v-if="$validation.comment.maxlength">輸入文字超過256個</p>
<input type="submit" value="send" v-if="$validation.valid" />
<button type="button" @click="onReset">Reset Validation</button>
</div>
<pre>{{$validation | json}}</pre>
</form>
</validator>
</div>
<script src="//cdn.bootcss.com/vue/1.0.24/vue.js" type="text/javascript" charset="utf-8"></script>
<script src="//cdn.bootcss.com/vue-validator/2.1.3/vue-validator.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
new Vue({
el: '#app',
methods: {
onReset: function () {
this.$resetValidation();
}
}
});
</script>復選框checkbox
<div id="app">
<validator name="validation">
<form novalidate>
<h2>調查</h2>
<fieldset>
<legend>請選擇水果</legend>
<input type="checkbox" id="apple" value="apple" v-validate:fruits="{
required: { rule: true, message: requiredErrorMsg },
minlength: { rule: 1, message: minlengthErrorMsg },
maxlength: { rule: 2, message: maxlengthErrorMsg }
}" />
<label for="apple">Apple</label>
<input type="checkbox" id="orange" value="orange" v-validate:fruits />
<label for="orange">Orange</label>
<input type="checkbox" id="grape" value="grape" v-validate:fruits />
<label for="grape">Grape</label>
<input type="checkbox" id="banana" value="banana" v-validate:fruits />
<label for="banana">Banana</label>
<ul class="errors">
<li v-for="msg in $validation.fruits">
<p>{{msg | json}}</p>
</li>
</ul>
</fieldset>
</form>
</validator>
</div>
<script src="//cdn.bootcss.com/vue/1.0.24/vue.js" type="text/javascript" charset="utf-8"></script>
<script src="//cdn.bootcss.com/vue-validator/2.1.3/vue-validator.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
new Vue({
el: '#app',
computed: {
requiredErrorMsg: function () {
return '請選擇水果';
},
minlengthErrorMsg: function () {
return '請選擇至少1個水果!';
},
maxlengthErrorMsg: function () {
return '請選擇最多2個水果!';
}
}
});
</script>下拉類表select
<div id="app">
<validator name="validation">
<form novalidate>
<select v-validate:lang="{required: true}">
<option value="">請選擇語言</option>
<option value="javascript">javascript</option>
<option value="php">php</option>
<option value="node">node</option>
</select>
<div class="errors">
<p v-if="$validation.lang.required">不能為空！</p>
</div>
</form>
</validator>
</div>
<script src="//cdn.bootcss.com/vue/1.0.24/vue.js" type="text/javascript" charset="utf-8"></script>
<script src="//cdn.bootcss.com/vue-validator/2.1.3/vue-validator.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
new Vue({
el: '#app'
});
</script>校驗狀態class
各校驗狀態都有其對應的class(默認) 也可以自定義校驗狀態class
<validator name="validation" :classes="{touched: 'touehc-validator', dirty: 'dirty-validator'}">
<label for="username">username</label>
<<input type="text" id="username" :classes="{valid: 'valid-username', invalid: 'invalid-username'}" v-validate:username="{required: {rule: true, message: 'required you name!'}}">
</validator>
<!-- classes屬性只能在validator元素或應用了v-validate的元素上使用有效 -->分組校驗
vue-validator支持分組校驗。例如重復密碼功能。
<div id="app">
<validator name="validation" :groups="['passwordGroup']">
<form novalidate>
username: <input type="text" v-validate:username="['required']" /><br />
password: <input type="password" v-validate:password="{ minlength: 8, required: true }" group="passwordGroup" /><br />
comfirm password: <input type="password" v-validate:password-comfirm="{minlength: 8, required: true}" group="passwordGroup" />
<div class="errors">
<p v-if="$validation.username.required">用戶名不能為空</p>
<p v-if="$validation.password.required">密碼不能為空</p>
<p v-if="$validation.password.minlength">密碼不能少于8位</p>
<p v-if="$validation.password-comfirm.required">重復密碼不能為空</p>
<p v-if="$validation.password-comfirm.minlength">密碼不能少于8位</p>
<p v-if="$validation.passwordGroup.valid">密碼不一致</p>
</div>
</form>
</validator>
</div>
<script src="//cdn.bootcss.com/vue/1.0.24/vue.js" type="text/javascript" charset="utf-8"></script>
<script src="//cdn.bootcss.com/vue-validator/2.1.3/vue-validator.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
new Vue({
el: '#app'
});
</script>讀到這里，這篇“Vue中怎么使用Validator表單驗證插件”文章已經介紹完畢，想要掌握這篇文章的知識點還需要大家自己動手實踐使用過才能領會，如果想了解更多相關內容的文章，歡迎關注億速云行業資訊頻道。
免責聲明：本站發布的內容（圖片、視頻和文字）以原創、轉載和分享為主，文章觀點不代表本網站立場，如果涉及侵權請聯系站長郵箱：is@yisu.com進行舉報，并提供相關證據，一經查實，將立刻刪除涉嫌侵權內容。
