我想知道如何清除"占位符"当用户单击该字段以填充它时,在TextInput中。
这是我的TextInput:
<TextInput
style={{height:40, borderColor: 'gray', borderWidth:1}}
onChangeText={(text) => this.setStoreName(text)}
value={this.state.storeName}
/>
我的构造函数:
constructor(props) {
super(props)
this.state = {
name: "Votre nom",
storeName: "Le nom de votre commerce",
email: "Votre email",
address: "L'adresse de votre commerce",
city: "Votre ville",
category: "Categorie",
password: "Votre mot de passe"
}
}
提前谢谢。
答案 0 :(得分:2)
placeholder
属性
<TextInput
style={{height:40, borderColor: 'gray', borderWidth:1}}
onChangeText={(text) => this.setStoreName(text)}
value={this.state.storeName}
placeholder="Le nom de votre commerce"
/>
并在构造函数
中constructor(props) {
super(props)
this.state = {
name: "",
storeName: "",
email: "",
address: "",
city: "",
category: "",
password: ""
}
}
答案 1 :(得分:2)
你应该像这样使用TextInput
:
constructor(props) {
super(props)
this.state = {
name: "",
storeName: "",
email: "",
address: "",
city: "",
category: "",
password: "",
placeholder: "initial value"
}
}
<TextInput
style={{height:40, borderColor: 'gray', borderWidth:1}}
onChangeText={(text) => this.setStoreName(text)}
value={this.state.storeName}
placeholder={this.state.placeholder}
onFocus={() => this.setState(placeholder: '')}
/>
当然,最好在类的主体中定义render
函数之外的函数,并在JSX中使用它们。