JavaScript average (4-7) importance

complexity: 1 ; importance: 7; author: docentmail

Question: Give sample of JavaScript code block

complexity: 1 ; importance: 7; author: docentmail

Question: What should be placed instead of dots to have method do (); performed only when x does not equal y ?

if (x ... y) {
  do();
}

complexity: 1 ; importance: 7; author: docentmail

Question: What is the name of "=" operators ?

complexity: 2 ; importance: 6; author: docentmail

Question: Give a code fragment that declares a variable, but is not initializing it.

complexity: 2 ; importance: 6; author: docentmail

Question:What is the latest standard of ECMA script?

complexity: 3 ; importance: 6; author: docentmail

Question: Use switch statement and write the code that alert Today is your day!

complexity: 3 ; importance: 6; author: docentmail

Question: create object that has a "name" field and can alert text "Hello my friend" on calling his hi method

complexity: 2 ; importance: 5; author: docentmail

Question: Modify the snippet to use "if" statement to alert "It is night." in case the variable "isNight" is true and "It is not night." otherwise.

complexity: 2 ; importance: 5; author: docentmail

Question: What would be value of x?

var x = 100 / "Apple"; 

complexity: 2 ; importance: 5; author: docentmail

Question: Which of the names of variables are correct?

2things
something4you
my_variable_name
aaa+bbb
...
 

complexity: 2 ; importance: 5; author: 4LUCKYNIKITA

Question: What would the alert say?

x=5
x += 5 + 2 
alert ( x ) ;

complexity: 2 ; importance: 5; author: docentmail

Question: Name reserved keywords of JavaScript

complexity: 2 ; importance: 5; author: docentmail

Question: Give code snippets with assignment operators.

complexity: 1 ; importance: 5; author: docentmail, 4luckynikita

Question:Name the main four arithmetical operations.

complexity: 3 ; importance: 5; author: docentmail

Question: Replace with the code fragment, with equals one that only one “.” per line/statement

var rez = document.getElementById("testspan").getAttribute("class").length;

complexity: 2 ; importance: 5; author: docentmail

Question: What would be the alert message for the code snippet?

alert(aVar);
var aVar=5;

complexity: 2 ; importance: 5; author: docentmail

Question: how many times method do() would be called?

for (i = 0; i < 1 ; i++) { 
   do();
}

complexity: 2 ; importance: 5; author: docentmail

Question: What would be alert messges for the code snippet?

alert(typeof myFunction);
alert(typeof OtherFunction);

function myFunction(){
  alert("Hello from myFunction ");
}

var myOtherFunction = function() {
       alert("hello from local myFunction");  
};

complexity: 4 ; importance: 5; author: docentmail

Question:List all falsy values.

complexity: 3 ; importance: 5; author: docentmail

Question:What is percentage of support ECMAScript 5 in modern browsers?

complexity: 4 ; importance: 5; author: docentmail

Question:Which version of ECMA script is supported by current browsers?

complexity: 4 ; importance: 5; author: docentmail

Question:Why standard for JavaScript has name ECMAScript?

complexity: 3 ; importance: 5; author: docentmail

Question:What is percentage of support ECMAScript 6.0 in modern browsers?

complexity: 4 ; importance: 5; author: docentmail

Question: Develop an snippet to use "if" statement to alert "type is number" if in case the type variable "theVar" is number, "type is string" if type is string less, "type is something else" otherwise.

complexity: 2 ; importance: 5; author: docentmail

Question: Develop an snippet to use "if" statement to alert "You are to young" in case the variable "age" is less or equal 17.

complexity: 2 ; importance: 5; author: docentmail

Question: Develop an snippet to use "if" statement to alert "The size fits" in case the variable "size" value is greater than 5 but less than 7.

complexity: 2 ; importance: 5; author: docentmail

Question: What would be value of x?

var x = 100 / "10";

complexity: 2 ; importance: 5; author: docentmail

Question:Give definition for "truthy/falsy values" with if statement.

complexity: 1 ; importance: 4; author: docentmail

Question: Give the code snippet to declare (or define) variable myVar but not initialize it. What is value of the variable?

complexity: 2 ; importance: 4; author: docentmail

Question: Name main parts (or aspects) of variable

complexity: 2 ; importance: 4; author: docentmail

Question: what does alert (x); show?

var x = 1;
var y = x;
y=101;
alert (x);

complexity: 5 ; importance: 4; author: docentmail

Question: What would be result of execution of the snippet?

function myFunction(){
  alert("Hello from myFunction ");
}

function testFunctionHoisting(){
   alert(typeof myFunction);
    
   myFunction();  

   var myFunction = function() {
       alert("hello from local myFunction");  
   };
}
testFunctionHoisting();

complexity: 2 ; importance: 4; author: docentmail

Question:What is the name of organization that maintains JavaScript standards?

complexity: 2 ; importance: 4; author: docentmail

Question: how many times method do() would be called?

for (i = 0; i < 1 ; i) { 
   do();
}

complexity: 2 ; importance: 4; author: docentmail

Question: how many times method do() would be called?

for (i = 0; i > 1 ; i++) { 
   do();
}

complexity: 2 ; importance: 4; author: docentmail

Question: How to assign last element of array b to var x