Uniapp mobile phone number verification regular expression

let reg = /^[1][3,4,5,7,8,9][0-9]{9}$/
    if (!this.oldPhone) {      //判断如果手机号为空,提示用户输入手机号
        uni.showToast({
            title: '请输入手机号码',
            icon: 'none'
        })
    return
    } else if (!reg.test(this.oldPhone)) {        //判断手机号格式时候正确
        uni.showToast({
        title: '手机号码不正确',
        icon: 'none'
        })
}

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Origin blog.csdn.net/weixin_57607714/article/details/124443838