微信小程序组件text

var initData = 'this is first line\nthis is second line'
var extraLine = [];
Page({
data: {
text: initData
},
add: function(e) {
extraLine.push('other line')
this.setData({
text: initData + '\n' + extraLine.join('\n')
})
},
remove: function(e) {
if (extraLine.length > 0) {
extraLine.pop()
this.setData({
text: initData + '\n' + extraLine.join('\n')
})
}
}
})

<view class="btn-area">
<view class="body-view">
<text>{{text}}</text>
<button bindtap="add">add line</button>
<button bindtap="remove">remove line</button>
</view>
</view>

.btn-area{
font-family:Verdana, Geneva, Tahoma, sans-serif;
padding: 0 10px 0 10px;
}
.body-view button{
margin-top :10px;
}