解析属性表达式

> 解析属性表达式从对象中读取属性

``javascript
const parserProperty = require("parser-property");
// 普通对象
const obj = {
message: '操作成功',
code: 0,
obj1: {
a: [
{
b: 'c',
d: {
e: [1]
}
}
]
},
data: [
{
fileType: 1,
fileName: 'M00/01/27/oYYBAGHazNyAd74OAAAA-aHMoL0330.txt',
fileGroup: 'g001',
fileUrl: '/g001/M00/01/27/oYYBAGHazNyAd74OAAAA-aHMoL0330.txt',
clientIp: '58.16.15.244',
addTime: '2022-01-09 19:54:04'
},
{
fileType: 1,
fileName: 'M00/01/27/oYYBAGHazNyAd74OAAAA-aHMoL0330.txt',
fileGroup: 'g001',
fileUrl: '/g001/M00/01/27/oYYBAGHazNyAd74OAAAA-aHMoL0330.txt',
clientIp: '58.16.15.245',
addTime: '2022-01-09 19:54:04'
}
]
};
console.log(parserProperty(obj, 'message')); // 操作成功
console.log(parserProperty(obj, '[message]')); // 操作成功
console.log(parserProperty(obj, '["message"]')); // 操作成功
console.log(parserProperty(obj, '[message]')); // 操作成功
console.log(parserProperty([123], '0', )); // 123
console.log(parserProperty([123], '[0]')); // 123
console.log(parserProperty([123], '["0"]')); // 123
console.log(parserProperty([123], '[0]')); // 123

console.log(parserProperty(obj, data[0]));
console.log(parserProperty(obj, data[0].fileUrl)); // /g001/M00/01/27/oYYBAGHazNyAd74OAAAA-aHMoL0330.txt
console.log(parserProperty(obj, 'data[1].clientIp')); // 58.16.15.245

console.log(parserProperty(obj, 'obj1.a')); // [ { b: 'c', d: { e: [Array] } } ]
console.log(parserProperty(obj, 'obj1.a[0].b')); // c
console.log(parserProperty(obj, 'obj1.a["0"].d.e[0]')); // 1
console.log(parserProperty(obj, 'obj1.a["0"].d.e[1]')); // undefined
console.log(parserProperty(obj, 'obj1.a["0"].d.e[0].c')); // undefined
// 复杂对象
const otherObj = {
a: [0, [
{
b: {
c: 2,
d: [0, {
e: {
f: 'hello',
'hello_world': 'hello_world'
}
}
]
}
}]]
};
console.log(parserProperty(otherObj, 'a[1][0].b.d[1].e["hello_world"]')); // hello_worrld
console.log(parserProperty(otherObj, 'a[1][0].b.d["1"].e["f"]')); // hello
console.log(parserProperty(otherObj, 'a[1][0].b.d["0"]')); // 0
``