Eval function

Javascript eval() function

eval(new String('2 + 2')); // returns a String object containing "2 + 2"
eval('2 + 2');             // returns 4

Source: developer.mozilla.org

Eval function

#Perfect if you want to store a mathematical expression without defining the
#variables used:
my_function = "5x**2 + 8x - 2"  #I want to define the function cleanly as a
                                #   variable
#insert definition of other varianles here
#insert other code here
def f(x):                       #Defining the function as the funtion f(x)                  
  return eval(my_function)    #Returning my_function with the x in f(x) as x

print(f(0))  #Printing f(0), thereby returning my_function with 0 as x
#Returns -2

Convert string of expression in to expression in javascript

eval(string)

Source: developer.mozilla.org

The eval() function

console.log(eval('2 + 2'));
// expected output: 4

console.log(eval(new String('2 + 2')));
// expected output: 2 + 2

console.log(eval('2 + 2') === eval('4'));
// expected output: true

console.log(eval('2 + 2') === eval(new String('2 + 2')));
// expected output: false

Source: roblox.com

Similar codes

0 vote152 views1 answer
Print('Hello world!\How are you?\ and(I'm fine).') syntax error
Python
0 vote170 views1 answer
Load url in jupyterlab
Python
5 votes238 views4 answers
Xticks and yticks matplotlib
Python
3 votes183 views1 answer
Default argument in flask route
Python Flask
0 vote147 views1 answer
How to get synonyms of a word in python
Python
0 vote135 views1 answer
How to code a jumping function in python
Python
1 vote161 views1 answer
Error bar plot python
Python
0 vote158 views1 answer
Menu in python
Python
15 votes162 views3 answers
How to delete in python
Python
-1 vote168 views1 answer
Sort dict based on other list
Python