how to convert {id: 111, name: "aaa"} to "id=111&name=aaa"
how to convert {id: 111, name: "aaa"} to "id=111&name=aaa"
function toUrlSearch (obj) {
return new URLSearchParams(obj).toString()
} it is most convenient to use qs module
https://github.com/ljharb/qs
the querystring; front end of the module that comes with nodejs should have a similar library
var querystring = require('querystring');
var obj = { id: 111, name: 'aaa'};
console.log(querystring.stringify(obj)); // "id=111&name=aaa"
version 1.0
function jsonToQuery(json) {
let result = [];
for (let key in json) {
result.push(key + '=' + json[key]);
}
return result.join('&');
};
version 2.0
function jsonToQuery(json, replace){
let result = [];
replace = replace || function(value){
return value;
}
for(let key in json){
let item = json[key];
result.push(key + '=' + replace(json[key]));
}
return result.join('&');}
/**
* object
* @param obj
* @returns {boolean}
*/
const isPlainObject = obj => {
if (typeof obj !== 'object' || obj === null) return false;
let proto = obj;
while (Object.getPrototypeOf(proto) !== null) {
proto = Object.getPrototypeOf(proto);
}
return Object.getPrototypeOf(obj) === proto;
};
/**
* objectarray
* @param obj
*/
const isObjectOrArray = obj =>
obj !== null && (Array.isArray(obj) || isPlainObject(obj));
/**
* dataquery string
* @param data
* @returns {string}
*/
const dataToQueryString = (data = null) => {
let queryString = '';
if (data !== null) {
const propsArray = Object.keys(data);
const queryArray = [];
propsArray.forEach(props => {
const value = data[props];
if (value !== undefined && value !== '') {
if (isObjectOrArray(value)) {
queryArray.push(`${props}=${encodeURI(JSON.stringify(value))}`);
} else {
queryArray.push(`${props}=${value}`);
}
}
});
queryString = queryArray.join('&');
}
return queryString;
};
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