Bracket Notation
Express structured data with bracket notation.
Note: This feature not supported when using JSON Because JSON has its own way to express structured data.
Object
const form = new FormData()
form.append('user[name]', 'John Doe')
form.append('user[age]', '30')
const params = new URLSearchParams()
params.append('user[name]', 'John Doe')
params.append('user[age]', '30')
// is equivalent to
const data = {
user: {
name: 'John Doe',
age: '30'
}
}Array
const form = new FormData()
form.append('ids[]', '1')
form.append('ids[]', '2')
const params = new URLSearchParams()
params.append('ids[]', '1')
params.append('ids[]', '2')
// is equivalent to
const data = {
ids: ['1', '2']
}