Currently, I find myself needing to individually verify each potential parameter.
if (req.query.param1 !== undefined ) {
}
if (req.query.param2 !== undefined ) {
}
if (req.query.param3 !== undefined ) {
}
...
Currently, I find myself needing to individually verify each potential parameter.
if (req.query.param1 !== undefined ) {
}
if (req.query.param2 !== undefined ) {
}
if (req.query.param3 !== undefined ) {
}
...
To retrieve all query parameters:
let allParams = Object.keys(req.query)
To determine the number of parameters:
let numOfParams = Object.keys(req.query).length
You can then loop through each parameter using the following code:
for(parameter in req.query) {
//... do something with each parameter
}
Update (UPD):
Ensure to use quotes around your request for proper querying:
curl -X GET "localhost:9090/mypath?param1=123¶m2=321"Not using quotes can cause the & symbol in the terminal to run the command in the background.
Looking to find the count of parameters that are not undefined? Here's a straightforward way to achieve that:
var count = 0;
for (var element in request.query) {
if(request.query[element]) count++;
}
When the URL is accessed with the path /mypath?param1=5¶m2=10, the contents of request.query will show as {param1: 5, param2:10}.
This implies that request.query functions as a JavaScript object where the key represents the parameter name and the value signifies the parameter value. This information can be utilized in various ways such as calculating the length or performing iterations as demonstrated below:
for (var key in request.query) {
if (request.query.hasOwnProperty(key)) {
alert(key + " -> " + request.query[key]);
}
}
Relying solely on the length might not be sufficient if there are missing parameters like param2 in your case. Iterating through the object would likely be a more effective approach.
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