textarea multi-line input box component description:

textarea multi-line input box.

The textarea multi-line input box sample code runs as follows:

The following is the WXML code:

<view class="content">
placeholder：
<textarea placeholder="占位符" />
<textarea placeholder="占位符 改變樣式style" placeholder-style=
"color:blue"/>
<textarea placeholder="占位符 改變樣式class" placeholder-class="placeholdText"/>
</view>

The following is the WXSS code:

.content{
??border:1px?black?solid;
??margin:?10px;
??font-size:?10pt;
??padding:?10px;
}
textarea{
??border:?1px?red?solid;
??margin:?auto;
??width:100%;
??height:?3em;
??margin-top:5px;
??padding:?3px;
}
/*占位符樣式*/
.placeholdText{
??font-size:?2em;
}

Textarea multi-line input box event rendering:

The following is the WXML code::

<view class="content">
auto-height：
<textarea  auto-height placeholder="自動(dòng)增高，style.height不生效"/>
bindinput="當(dāng)內(nèi)容改變"
<textarea  placeholder="" bindlinechange="bindlinechange"/>
bindfocus:當(dāng)獲取焦點(diǎn)
<textarea  placeholder="當(dāng)獲取焦點(diǎn)" value="" bindfocus="bindfocus"/>
bindblur：當(dāng)失去焦點(diǎn)觸發(fā)
<textarea  placeholder="當(dāng)失去焦點(diǎn)" bindblur="bindblur"/>
</view>
事件觸發(fā)：
<view class="content"  style="color:blue">
{{log}}
</view>

The following is the JS code::

Page({
??data:{
????log:'事件觸發(fā)'
??},
??//行高改變時(shí)
??bindlinechange:function(e){
????var?height=e.detail.height;
????var?heightRpx=e.detail.heightRpx;
????var?lineCount=e.detail.lineCount;
????this.setData({
??????log:"height="+height+"??|??heightRpx="+heightRpx+"??|??lineCount="+lineCount
????})
??},
????//文本失去焦點(diǎn)
??bindblur:function(e){
????var?value=e.detail.value;
?????this.setData({
??????log:"bindblur失去改變.獲取textarea值="+value
????})
??},
???//文本獲取焦點(diǎn)
??bindfocus:function(e){
????var?value=e.detail.value;
?????this.setData({
??????log:"bindfocus獲取焦點(diǎn),獲取textarea值="+value
????})
??}
})

The following is the WXSS code: :

.content{
??border:1px?black?solid;
??margin:?10px;
??font-size:?10pt;
??padding:?10px;
}
textarea{
??border:?1px?red?solid;
??margin:?auto;
??width:100%;
??height:?3em;
??margin-top:5px;
??padding:?3px;
}

Attribute parsing:

The following is the WXML code:

<!--=======屬性=======-->
<!--value：輸入框內(nèi)容-->
<textarea value="內(nèi)容"/>
<!--placeholder：占位符，對(duì)輸入框內(nèi)容提示-->
<textarea placeholder="占位符" placeholder-class="占位符靜態(tài)樣式"   placeholder-style="占位符動(dòng)態(tài)樣式"/>
<!--disabled：控制標(biāo)簽有效,或者失效狀態(tài)，在失效狀態(tài)，不能獲取該值-->
<textarea disabled="true"/>
<textarea disabled/>?等同于?<textarea disabled="false"/>
<!--maxlength:內(nèi)容長度限制,默認(rèn)140-->
<textarea  maxlength="100"/>
<textarea  maxlength/>?等同于?<textarea  maxlength="140"/>
<!--focus:初始化時(shí)，獲取輸入焦點(diǎn)(目前開發(fā)工具暫不支持)-->
<textarea  focus="true"/>
<textarea focus/>?等同于?<textarea focus="false"/>
<!--auto-focus：當(dāng)界面只有一個(gè)textarea,自動(dòng)獲取焦點(diǎn)-->
<textarea   auto-focus="true"/>
<textarea   auto-focus/>?等同于?<textarea auto-focus="false"/>
<!--auto-height：是否自動(dòng)增高，設(shè)置auto-height時(shí)，style.height不生效-->
<textarea  auto-height="true"/>
<textarea  auto-height/>?等同于?<textarea auto-height="false"/>
<!--=======事件=======-->
<!--bindlinechange:輸入框行數(shù)變化時(shí)調(diào)用 返回參數(shù)：height,heightRpx,lineCount-->
<textarea bindlinechange="自己定義函數(shù)名"/>
<!--bindfocus:當(dāng)獲取焦點(diǎn)，可用輸入狀態(tài)時(shí)觸發(fā)-->
<textarea bindfocus="自己定義函數(shù)名"/>
<!--bindblur：當(dāng)失去焦點(diǎn)觸發(fā)-->

The above is the detailed content of WeChat applet component: textarea multi-line input box interpretation and analysis. For more information, please follow other related articles on the PHP Chinese website!