input输入框组件说明:
本文介绍input 输入框的各种参数及特性。
input输入框示例代码运行效果如下:
下面是WXML代码:
[XML] 纯文本查看 复制代码
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< view class = "content" >
type:有效值:text 感觉没什么区别 < input placeholder = "type=text" type = "text" value = "" />
< input placeholder = "type=number" type = "number" value = "" />
< input placeholder = "type=idcard" type = "idcard" value = "" />
< input placeholder = "type=digit" type = "digit" value = "" />
password: < input type = "text" password = "{{false}}" placeholder = "请输入密码" />
< input type = "text" password = "{{true}}" placeholder = "请输入密码" />
placeholder: < input placeholder = "占位符" />
disable: < input placeholder = "disable={{false}}" disabled = ‘{{false}}‘ />
< input placeholder = "disable={{true}}" disabled = ‘{{true}}‘ />
最大长度: < input maxlength = "10" placeholder = "maxlength=‘10‘最多长度10字符" />
< input maxlength = "5" placeholder = "maxlength=‘5‘最多长度5字符" />
< input maxlength = "-1" placeholder = "值为-1,则不限制长度" />
</ view >
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下面是WXSS代码:
[JavaScript] 纯文本查看 复制代码
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.content{ border:1px black solid;
margin: 10px;
font-size: 10pt;
padding: 5px;
} input{ border:1px red solid;
margin: 5px; } |
事件效果图:
下面是WXML代码:
[XML] 纯文本查看 复制代码
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< view class = "content" >
bindinput="当内容改变" < input bindinput = "bindinput" />
bindfocus:当获取焦点 < input bindfocus = "bindfocus" />
bindblur:当失去焦点触发 < input bindblur = "bindblur" />
内容: < view style = "color:blue" >
{{log}} </ view >
</ view >
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下面是JS代码:
[JavaScript] 纯文本查看 复制代码
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Page({ data:{
log: ‘事件触发‘
},
bindblur: function (e){
var value=e.detail.value;
this .setData({
log: "bindblur失去焦点.输入框值=" +value
})
},
bindinput: function (e){
var value=e.detail.value;
this .setData({
log: "bindinput内容改变.输入框值=" +value
})
},
bindfocus: function (e){
var value=e.detail.value;
this .setData({
log: "bindfocus获取焦点.输入框值=" +value
})
}
}) |
下面是WXSS代码:
[JavaScript] 纯文本查看 复制代码
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.content{ border:1px black solid;
margin: 10px;
font-size: 10pt;
padding: 5px;
} input{ border:1px red solid;
margin: 5px; } |
组件属性:
属性
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描述
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类型
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默认值
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value
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输入框的初始内容
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String
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type
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有效值:text, number, idcard, digit
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String
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text
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password
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是否是密码类型
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Boolean
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false
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placeholder
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输入框为空时占位符
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String
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placeholder-style
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指定 placeholder 的样式
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String
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placeholder-class
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指定 placeholder 的样式类
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String
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input-placeholder
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disabled
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是否禁用
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Boolean
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false
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maxlength
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最大输入长度, 设置为-1 的时候不限制最大长度
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Number
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140
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auto-focus
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自动聚焦,拉起键盘。页面中只能有一个 input 或 textarea标签时, 设置 auto-focus 属性
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Boolean
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false
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focus
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获取焦点(当前开发工具暂不支持)
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Boolean
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false
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bindinput
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除了date/time类型外的输入框,当键盘输入时,触发input事件,处理函数可以直接 return 一个字符串,将替换输入框的内容。
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EventHandle
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bindfocus
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输入框聚焦时触发event.detail = {value: value}
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EventHandle
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bindblur
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输入框失去焦点时触发event.detail = {value: value}
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EventHandle
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属性解析:
下面是WXML代码:
[XML] 纯文本查看 复制代码
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<!--属性:--> <!--value:输入框内容--> < input value = "内容" />
<!--type:有效类型text,number,idcard,digit,小编感觉其他三个和text没有明显区别,不清楚是什么问题,正常number应该只允许输入数字,但结果和text一样--> < input type = "text" />
< input type = "number" />
< input type = "idcard" />
< input type = "digit" />
<!--password:密码格式 boolean需要{{}}表示--> < input password = "{{true}}" />
< input password/> 等同于 < input password = "{{false}}" />
<!--placeholder:占位符,对输入框内容提示--> < input placeholder = "占位符" placeholder-class = "占位符静态样式" placeholder-style = "占位符动态样式,可用{{}}进行动态赋值" />
<!--disabled:控制标签有效,或者失效状态,在失效状态,不能获取该值--> < input disabled = "{{true}}" />
< input disabled/> 等同于 < input disabled = "{{false}}" />
<!--maxlength:内容长度限制,默认140--> < input maxlength = "100" />
< input maxlength/> 等同于 < input maxlength = "140" />
<!--focus:初始化时,获取输入焦点(目前开发工具暂不支持)--> < input focus = "{{true}}" />
< input focus/> 等同于 < input focus = "{{false}}" />
<!--auto-focus:当界面只有一个input,自动获取焦点--> < input auto-focus = "{{true}}" />
< input auto-focus/> 等同于 < input auto-focus = "{{false}}" />
<!--事件:--> <!--bindinput:当内容改动时触发--> < input bindinput = "自己定义函数名" >
<!--bindfocus:当获取焦点,可用输入状态时触发--> < input bindfocus = "自己定义函数名" >
<!--bindblur:当失去焦点触发--> < input bindblur = "自己定义函数名" >
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