Postman pre request

Using dynamic variables

Method 1 ：
Reference timestamp variables ：{ {$timestamp}} The parameters of the request can be generated dynamically
Method 2 ：
{ {$randomInt}}：0 To 1000 Random integer between
Method 3 ：
{ {$guid}} ：v4 Styling guid Generate similar d1a78ce0-757a-4cd6-91e5-15ca1b340dc7 This random value , More random

Get request parameters , Preprocessing

evn_username Variable in Pre-request-Script The script defines

// Get the timestamp 
var timestrip = Math.round(new Data()/1000).toString()
console.log(timestrip);

// Set the environment variable evn_username Value 
pm.environment.set("evn_username",'test'_Math.round(new Date()/1000));

Commonly used Pre-request Script Code

// Clear global variables 
pm.globals.unset("variable_key");
// Clear environment variables 
pm.environment.unset("variable_key");
// Get global variables 
pm.globals.get("variable_key");
// Get a variable 
pm.variable.get("variable_key");
// Get environment variables 
pm.environment.get("variable_key");
// Send a request 
pm.sendRequest("https://postman-echo.com/get",function(err,response){
    
console.log(response.json());});
// Set the environment variable 
pm.globals.set("variable_key","variable_value");

Can be generated directly on the right