我刚刚学习了Bootstrap 4的vuejs，并尝试显示模式，前提是当未单击创建按钮时，HTML模态标签未显示在inspect元素中，并且在创建按钮之后，单击了显示的引导模态。当第一次创建按钮时，单击inspect元素上的HTML模态标签显示，但是引导模态不能显示在浏览器页面上，而第二次可以显示引导模态。这是我使用Laravel编写的源代码，谢谢您。
User.vue
HTML
<template>
<div class="container">
<div class="row">
<div class="col-sm">
<div class="card-deck mb-3">
<div class="card mb-4 box-shadow">
<div class="card-header bg-success text-white">
<h4 class="my-0 font-weight-bold">
<!-- Button create user -->
<button @click="initAddUser()" class="btn btn-danger btn-sm"><i class="fa fa-plus"></i> Create New User</button>
<span class="float-right">User</span>
</h4>
</div>
<div class="card-body">
<!-- Bootstrap modal -->
<div v-if="showModal" class="modal fade" id="add_user_model" tabindex="-1" role="dialog" aria-labelledby="add_user_model_label" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header bg-info text-white">
<h5 class="modal-title" id="add_user_model_label"><i class="fa fa-plus"></i> Add New User</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
</div>
<div class="modal-body">
<!-- Message errors create user -->
<div class="alert alert-danger" v-if="errors.length > 0">
<button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">×</span></button>
<h5>{{ messages }}</h5>
<ul>
<li v-for="error in errors">{{ error }}</li>
</ul>
</div>
<div class="form-group">
<label class="font-weight-bold" for="name">Name :</label>
<input type="text" class="form-control" id="name" name="name" placeholder="Name" v-model="user.name">
</div>
<div class="form-group">
<label class="font-weight-bold" for="name">Email :</label>
<input type="email" class="form-control" id="email" name="email" placeholder="E-mail" v-model="user.email">
</div>
<div class="form-group">
<label class="font-weight-bold" for="password">Password:</label>
<input type="password" class="form-control" id="password" name="password" placeholder="Password" v-model="user.password">
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-sm btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-sm btn-primary" @click="createUser()">Submit</button>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</template>
Js
<script>
export default {
data() {
return {
user: {
name: '',
email: '',
password: ''
},
errors: [],
users: [],
showModal: false,
}
},
mounted() {
this.readUsers();
},
methods: {
initAddUser() {
this.errors = [];
$("#add_user_model").modal("show");
this.showModal = true;
},
reset() {
this.user.name = '';
this.user.email = '';
this.user.password = '';
},
readUsers() {
axios.get('/user/show')
.then(response => {
this.users = response.data.users;
});
},
createUser() {
axios.post('/user', {
name: this.user.name,
email: this.user.email,
password: this.user.password,
})
.then(response => {
this.reset();
this.users.push(response.data.user);
this.readUsers();
$("#add_user_model").modal("hide");
})
.catch(error => {
this.errors = [];
this.messages = error.response.data.message;
if (error.response.data.errors.name) {
this.errors.push(error.response.data.errors.name[0]);
}
if (error.response.data.errors.email) {
this.errors.push(error.response.data.errors.email[0]);
}
if (error.response.data.errors.password) {
this.errors.push(error.response.data.errors.password[0]);
}
});
}
}
}
</script>
结果图像检查元素