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 vote376 views1 answer
Jupyter notebook set password
Python
0 vote309 views1 answer
Rotch randn
Python
0 vote330 views1 answer
Boolean indexing datetime object | converting string to datetime object
Python
3 votes374 views2 answers
Draw bounding box on image python cv2
Python
1 vote283 views3 answers
How to sort values in python
Python
0 vote291 views1 answer
Pandas concat / merge two dataframe within one dataframe
Python
4 votes274 views2 answers
How to scatter plot in matplotlib of two sets
Python
3 votes334 views1 answer
File manage py line 17 from exc django
Python Django
2 votes255 views1 answer
Python ridge regression
Python
1 vote323 views1 answer
Py get mouse coordinates
Python