JavaScript - Cheat Sheet

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Functions

// JavaScript - Function - Loop - Conditionals
// URL: N/A

var inGlobalContext = true;

function printLessThanFive(){
    var isInLessThanFiveFunction = true;
    console.log('the number is less than 5');  
}

function printIsFive(){
    var isInGreaterThanFiveFunction = true;
    console.log('the number is five');
}

function printGreaterThanFive(){
    var isInGreaterThanFiveFunction = true;
    console.log('the number is greater than five');
}


function runLoop(){
    var inRunLoop = true;
    for (var i=0; i<10; i++){
        if (i<5){
            printLessThanFive();
        }
        else if (i===5){
            printIsFive();
        }
        else{
            printGreaterThanFive();
        }
    }
}

runLoop();

// JavaScript - Function - Multiple Calls
// URL: N/A

function forth(){
    console.log('yay!');
}

function third(){
    var inThird = true;
    console.log('running "third"');
    forth();
}

function second(){
    console.log('running "second"');
    third();
}

function first(){
    for (var i=0; i<10; i++){
        console.log('printing something 10 times', i);
    }
    console.log('running "first"');
    second();
}

first();

Loops

// JavaScript - Loop - Console Output
// URL: N/A

for (var i=0; i<10;i++){
    console.log('Hello World' + i);
}

XPath

// JavaScript - XPath - Click button (Inline)
// URL: http://the-internet.herokuapp.com/login

document.evaluate('//button[@type=\"submit\"]',document.body,null,9,null).singleNodeValue.click();

// JavaScript - XPath - Click button (Multiline)
// URL: http://the-internet.herokuapp.com/login

var LO_Universal = "//button[@type=\"submit\"]";
document.evaluate(`${LO_Universal}`,document.body,null,9,null).singleNodeValue.click();

// JavaScript - XPath - Click button - Pause Udemy Video (Multiline)
// URL: https://www.udemy.com/course/ios-13-app-development-bootcamp/learn/lecture/18002665?start=105#overview

xPathRes = document.evaluate (`//button[@data-purpose='pause-button']`, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
xPathRes.singleNodeValue.click();

// JavaScript - XPath - Click button - Play Udemy Video (Multiline)
// URL: https://www.udemy.com/course/ios-13-app-development-bootcamp/learn/lecture/18002665?start=105#overview

xPathRes = document.evaluate (`//button[@data-purpose='play-button']`, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
xPathRes.singleNodeValue.click();

// JavaScript - XPath - Click link (Inline)
// URL: http://the-internet.herokuapp.com/login

myFind = document.evaluate (`//a[@href="http://elementalselenium.com/"]`, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null); myFind.singleNodeValue.click();

// JavaScript - XPath - Click link (Multiline)
// URL: http://the-internet.herokuapp.com/login

var xPathRes = document.evaluate (`//a[@href="http://elementalselenium.com/"]`, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
xPathRes.singleNodeValue.click();

// JavaScript - XPath - Count links (Inline) - Cousole Output
// URL: http://the-internet.herokuapp.com/login

locatorCount = document.evaluate(`count(//a)`, document, null, XPathResult.ANY_TYPE, null);
console.log(`This document contains ${locatorCount.numberValue} links.`);

// JavaScript - XPath - Count paragraphs (Inline) - Cousole Output
// URL: http://the-internet.herokuapp.com/login

paragraphCount = document.evaluate('count(//p)', document, null, XPathResult.ANY_TYPE, null);
console.log(`This document contains ${locatorCount.numberValue} paragraphs.`);

Other Example

// Count the number of XPath Locators

var LO_Universal = "//input[@id=\"notification\"]";
var LO_Universal2 = "//input";

var paragraphCount = document.evaluate( 'count(//input)', document, null, XPathResult.ANY_TYPE, null );
alert( 'This document contains ' + paragraphCount.numberValue + ' paragraph elements' );

var paragraphCount = document.evaluate( `count(${LO_Universal})`, document, null, XPathResult.ANY_TYPE, null );
alert( 'This document contains ' + paragraphCount.numberValue + ' paragraph elements' );

var paragraphCount = document.evaluate( `count(//input[@id=\"notification\"])`, document, null, XPathResult.ANY_TYPE, null );
alert( 'This document contains ' + paragraphCount.numberValue + ' paragraph elements' );

// This JavaScript get the value of a field using two different methods.
// URL = https://testtools.ramseysolutions.net/urlauditor

console.log("===== Get Value using getElementById =======");
var MyElement = document.getElementById("UUID").name;
console.log(`MyElement: ${MyElement}`);

console.log("===== Get Value using XPath =======");
var LO_Universal = "//input[@id=\"UUID\"]";
var MyElement = document.evaluate(`${LO_Universal}`, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
console.log(`MyElement: ${MyElement.singleNodeValue.name}`);

// This JavaScript gets the value of a hidden field using XPath.
// URL = https://testtools.ramseysolutions.net/urlauditor

console.log("===== Get Hidden Value using XPath =======");
var LO_Universal = "//input[@name=\"campaign_id\"]";
var MyElement = document.evaluate(`${LO_Universal}`, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
console.log(`MyElement: ${MyElement.singleNodeValue.value}`);

// This JavaScript get the value of a hidden field using XPath
// Then is changes the hidden value
// Then it gets the changed hidden value.
//
// URL = https://testtools.ramseysolutions.net/urlauditor
// Ref: https://developer.mozilla.org/en-US/docs/Web/API/XPathResult

// Set universal values
var LO_Universal = "//input[@name=\"test_tags\"]";
var MyElement = document.evaluate(`${LO_Universal}`, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);

console.log("===== Get Value using XPath =======");
var MyValue1 = MyElement.singleNodeValue.value
console.log(`MyValue: ${MyValue1}`);

console.log("===== Set Value using XPath =======");
MyElement.singleNodeValue.value = "heartbaet"

console.log("===== Get Value using XPath =======");
var MyValue2 = MyElement.singleNodeValue.value
console.log(`MyValue: ${MyValue2}`);

Terminology

  • JXA (JavaScript for Automation)

Language Syntax

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Functionality

(edit)

Language
Family Specific Details AppleScript C++ JavaScript Ruby Shell Visual Basic
Documentation Comment -- This is a comment // This is a comment // This is a comment # This is a comment # This is a comment ' This is a comment
Collection Array struct myInfo { int myNum; string myName;};
Collection Structure (aka struct) A way to group several related variables into one place. if a > b
Comparison Greater Than if a > b if a > b If a > b Then
Comparison Less Than if a < b if a < b If a < b Then
Comparison Equal To if a == b
Comparison Not Equal To if a != b if a != b If a <> b Then
Computation Addition a = b + c a = b + c
Computation Division a = b / c a = b / c
Computation Multiplication a = b * c a = b * c
Computation Subtraction a = b - c a = b - c
Conditional Case

switch(expression {case x: // code

break;

case y: // code

break;

default:// code

}

case fruit when 'Apple' result = '1 a day' when 'Pear' result = '1 a week' else result = 'unknown' end Select Case(Fruit) Case "Apple" Result = "1 a day" Case "Pear" Result = "1 a week" Case Else Result = "Unknown" End Select
Conditional If - And - Then If a = 1 and b = 2 Then
Conditional If - Or - Then If a = 1 of b = 1 Then
Conditional If - Then - Else if (time < 18) {  cout << "Good day.";} else {  cout << "Good evening.";} if result == 'pass' puts 'Pass' elsif result == 'fail' #Note how elsif is spelled puts 'Fail' else puts 'Other' end If a = b Then print "a equals b" ElseIf a = c Then print "a equals c" Else print "a does not equal b" End If
Conditional Ternary Short-hand if else statement. result = (time < 18) ? "Good day." : "Good evening."; var_is_greater_than_three = (var > 3 ? true : false)
Date Addition EstHours = DateAdd("d",Days,Today)
Date Difference EstHours = DateDiff("h",FirstDate, SecondDate)
Dialog display dialog "Hello World"

var app = Application.currentApplication();
app.includeStandardAdditions = true;
app.displayAlert("This is a message");

IO Input cin >> x; // Get user input
IO Output cout << "Hello World!"; puts "Hello World" echo "Hello World"
IO Serial Monitor or Terminal Serial.begin(115200);Serial.println("Hello\nWorld");" puts "Hello World"
Load URL open location "https://gregpaskal.com/"
Logical And Returns true if both are true if a = 1 && b = 2
Logical Or Returns true if one or the other are true if a = 1 || b = 2
Logical Not Returns true if results are false if a != 1
Loop Do do {  cout << i;  i++;}while (i < 5); i = 0 Do Print "Hello" i = i + 1 If i = "" Then Exit Do End If Loop until i > 5
Loop For for (int i = 0; i < 5; i++) {  cout << i;} for i in 1..10 puts i end For i = 1 to 10 print i Next
Loop While while (i < 5) {  cout << i;  i++;}
Speak
String Concatanation Joining multiple strings together set theDialogText to "The current date and time is " & (current date) & "." fullName = firstName + lastName; filespec = filepath + filename Result = "Age = " & MyAge
String Interpolation (Not possible in AppleScript) Result = "Hello #{first_name}"
String Length Get the length of a string theLen = txt.length();
String New line Start a new line \n
Type Bool bool myBoolean = true;
Type Double double myLargeNum = 556.9923234;
Type Character Store a single character char myLetter = 'D';
Type Float float myFloatNum = 5.99;
Type Integer int myNum = 15; a = Int(12.34)
Type String string myText = "Hello";
Time Delay Waiting for a designated delay delay(250); sleep(1)
Variable Class Shared by all instances of a class @@URL = 'www.mysite.com'
Variable Constant Value to stay the same for the duration of the code execution. Changing value will generate warning. const float PI = 3.14; URL = 'www.mysite.com'
Variable Global Shared across the entire program $URL = 'www.mysite.com'
Variable Instance Belongs to the object itself @URL = 'www.mysite.com'
Variable Local Only accessible from the block it's initialize from set myName to "Bob Smith" a = 1 ma_name="Bob Smith" a = 1
Variable Pre-defined __FILE__ (Current File) __dir__ (Current Directory) __LINE__ (Current Line) MyFile = __FILE__

Reference

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