(Node.js) Keeping Query Params in a Hashtable

Demonstrates how to use a Chilkat Hashtable to hold query params and re-emit as a query param string.

Note: The ToQueryString method was added in Chilkat v9.5.0.92.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    var ht = new chilkat.Hashtable();
    var success;

    // Add name/value pairs from an existing query param string where the values are already URL encoded.
    var qp = "txt=this%20is%20a%20test&color=blue&fruits=apples%26oranges";
    success = ht.AddQueryParams(qp);

    // Add some additional name/value pairs.
    ht.AddStr("name","Jack Sparrow");
    ht.AddStr("movie","Pirates of the Carribean");

    // Iterate over the hash table to show what we have..

    var keys = new chilkat.StringTable();
    ht.GetKeys(keys);
    var numKeys = keys.Count;
    var key;
    var val;
    var i = 0;
    while (i < numKeys) {
        key = keys.StringAt(i);
        val = ht.LookupStr(key);
        console.log(key + " = " + val);
        i = i+1;
    }

    // Output for the above loop:

    // color = blue
    // name = Jack Sparrow
    // fruits = apples&oranges
    // txt = this is a test
    // movie = Pirates of the Carribean

    // Get all name/value pairs as a query parm string with values URL encoded
    qp = ht.ToQueryString();
    console.log(qp);

    // Result:
    // color=blue&name=Jack%20Sparrow&fruits=apples%26oranges&txt=this%20is%20a%20test&movie=Pirates%20of%20the%20Carribean

}

chilkatExample();