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jsonpath.get

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最終更新日: 2025-03-11 20:04:59
jsonpath.get is used to get the value of the corresponding path from a JSON string.
get(json: string, path: string): string | number | boolean | object

Parameters

Parameter
Type
Description
json
string
JSON string.
path
string
Value path.

Return

Type
Description
string, number, boolean, or object.
The data obtained from the value.

Samples

Obtain the value for the given path:
import jsonpath from 'pts/jsonpath';

export default function () {
const json = JSON.stringify({
name: { first: 'Tom', last: 'Anderson' },
age: 37,
children: ['Sara', 'Alex', 'Jack'],
'fav.movie': 'Deer Hunter',
friends: [
{ first: 'Dale', last: 'Murphy', age: 44, nets: ['ig', 'fb', 'tw'] },
{ first: 'Roger', last: 'Craig', age: 68, nets: ['fb', 'tw'] },
{ first: 'Jane', last: 'Murphy', age: 47, nets: ['ig', 'tw'] },
]
});

console.log(jsonpath.get(json, 'name.last')); // Anderson
console.log(jsonpath.get(json, 'age')); // 37
console.log(jsonpath.get(json, 'children')); // Sara,Alex,Jack
console.log(jsonpath.get(json, 'children[*]')); // Sara,Alex,Jack
console.log(jsonpath.get(json, 'children.[0]')); // Sara
console.log(jsonpath.get(json, 'children[1:2]')); // Alex,Jack
console.log(jsonpath.get(json, 'friends[:].first')); // Dale,Roger,Jane
console.log(jsonpath.get(json, 'friends[1].last')); // Craig
console.log(jsonpath.get(json, 'friends[?(@.age > 45)].last')); // Craig,Murphy
console.log(jsonpath.get(json, 'friends[?(@.first =~ /D.*e/)].last')); // Murphy
}


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