1.wxml:
<textarea placeholder="请描述内容" maxlength="{{noteMaxLen}}" bindinput="bindWordLimit"></textarea> <text>{{currentNoteLen|0}}/{{noteMaxLen}}</text>
2.wxjs:
Page({
data: {
noteMaxLen: '50',
},
bindWordLimit: function (e) {
var value = e.detail.value,
len = parseInt(value.length);
if (len > this.data.noteMaxLen) return;
this.setData({
currentNoteLen: len //当前字数
//limitNoteLen: this.data.noteMaxLen - len //剩余字数
});
},
})