# What is the output of 2 5 3 in JavaScript?

## What is the output of 2 5 3 in JavaScript?

What would be the result of 2+5+”3″? Since 2 and 5 are integers, they will be added numerically. And since 3 is a string, its concatenation will be done. So the result would be 73.

What is === in JavaScript?

The strict equality operator ( === ) checks whether its two operands are equal, returning a Boolean result. Unlike the equality operator, the strict equality operator always considers operands of different types to be different.

How do I check if a string contains a specific word in JavaScript?

The includes() method returns true if a string contains a specified string. Otherwise it returns false .

### How do you search a string for a pattern in JS?

When you want to know whether a pattern is found, and also know its index within a string, use search() .

1. If you only want to know if it exists, use the RegExp. prototype. test() method, which returns a boolean.
2. If you need the content of the matched text, use match() or RegExp. prototype. exec() .

What would be the result of 3 2 7 in JavaScript?

What would be the result of 3+2+”7″? Since 3 and 2 are integers, they will be added numerically. And since 7 is a string, its concatenation will be done. So the result would be 57.

What would be the result of 1 2 +’ 3 in JavaScript?

1+ +”2″+3 results 6 1+”2″+3 results “123” AS The unary + operator converts its operand to Number type. Show activity on this post. +”2″ is a way to cast the string “2” to the number 2 .

## What is the result of 2 === 2 in JavaScript?

Type converting equality (==) means automatically it will covert the variable to value irrespective of data type; either it is a string or a number. This means “2” will be equal to 2 (“2” == 2 it will return true).

What does == === mean?

is exactly equal to

The === operator means “is exactly equal to,” matching by both value and data type. The == operator means “is equal to,” matching by value only.

How do I check if a string contains a specific words?

You can use the PHP strpos() function to check whether a string contains a specific word or not. The strpos() function returns the position of the first occurrence of a substring in a string. If the substring is not found it returns false . Also note that string positions start at 0, and not 1.

### How do you check a string contains a number in JavaScript?

To check if a string contains numbers in JavaScript, call the test() method on this regex: /\d/ . test() will return true if the string contains numbers. Otherwise, it will return false .

How do I search for a word in JavaScript?

JavaScript Code:
function search_word(text, word){ var x = 0, y=0; for (i=0;i< text. length;i++) { if(text[i] == word) { for(j=i;j< i+word. length;j++) { if(text[j]==word[j-i]) { y++; } if (y==word. length){ x++; } } y=0; } } return “‘”+word+”‘ was found “+x+” times.

How can you match substring of a string JavaScript?

To check if a substring is contained in a JavaScript string:
Call the indexOf method on the string, passing it the substring as a parameter – string. indexOf(substring) Conditionally check if the returned value is not equal to -1. If the returned value is not equal to -1 , the string contains the substring.

## What does i ++ mean in JavaScript?

the increment
The value i++ is the value of i before the increment. The value of ++i is the value of i after the increment. Example: var i = 42; alert(i++); // shows 42 alert(i); // shows 43 i = 42; alert(++i); // shows 43 alert(i); // shows 43. The i– and –i operators works the same way.

What will be the result of 3 2 7 in JavaScript?

What is == and === in JavaScript?

operators in javascript are used to compare two values. The == operator checks if two values are equal. The != operator checks if two values are not equal.

### What is the meaning of I refuse to sink?

An Anchor with the words ‘Refuse to sink’ is a firm sign of hope to hold on to. It means that an individual will not let a struggle become an anchor in stopping them to reach their goals. . It can be referenced back to a bible verse, “We have this hope as an anchor for the soul, firm and secure”.

What does || stand for?

The symbol for parallelism is ||. To signify that two lines are parallel, you can place the names of the lines on either side of this symbol. For example, AB || CD means that the line AB runs parallel to the line CD.

How do you check if a string contains a specific character in JavaScript?

Use the String. indexOf() method to check if a string contains a character, e.g. if (str. indexOf(char) !== -1) {} .

## How do I extract a specific word from a string in Java?

how to get individual words from a string in java

1. {
2. public static void main(String args[])
3. {
4. String str = “Hey this is Ram”;
5. String [] words = str. split(” “, 3);
6. for (String word : words)
7. System. out. println(word);

How do you check if a value is a string in JavaScript?

Use the typeof operator to check if a variable is a string, e.g. if (typeof variable === ‘string’) . If the typeof operator returns “string” , then the variable is a string.

How do you check if a string only contains certain characters in JS?

Use the test() method to check if a string contains only letters, e.g. /^[a-zA-Z]+\$/. test(str) . The test method will return true if the string contains only letters and false otherwise.

### How do you check if a string contains a character JavaScript?

Use the String. includes() method to check if a string contains a character, e.g. if (str. includes(char)) {} . The include() method will return true if the string contains the provided character, otherwise false is returned.

How do you get a string before a specific character in JavaScript?

Use the substring() method to get the substring before a specific character, e.g. const before = str. substring(0, str. indexOf(‘_’)); . The substring method will return a new string containing the part of the string before the specified character.

Is ++ and += 1 the same?

These two are exactly the same. It’s just two different ways of writing the same thing. i++ is just a shortcut for i += 1 , which itself is a shortcut for i = i + 1 . These all do the same thing, and it’s just a question of how explicit you want to be.

## What is difference between i ++ and ++ i in JavaScript?

Differences between i++ and ++i in JavaScript
The main difference between the two is that: Prefix increment ( ++i ) increments, and returns the new, incremented value; Postfix increment ( i++ ) increments, but returns the old value (i.e. the value before the increment).