js正则验证手机号是否有效

//判断手机号
blurphone(){
var reg = /^1[3,4,5,6,7,8,9][0-9]{9}KaTeX parse error: Expected '}', got 'EOF' at end of input: … this.message({
message: ‘电话号码格式不正确’,
type: ‘warning’
});
this.phone = ‘’
}
},