vux radio 改造爲 tree 代碼片段

思路：用全角空格和半角空格做區分。 1、自己寫的部分 this.toOptions = arr.map(x => { let kong = '' for (let i = 1; i < x.level; i = i + 1) { kong = kong + '　' } kong = kong + ' ' let icon = 'https://s1.ax1x

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