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

3 votes146 views5 answers
How to groupby in pandas
Python
67 votes114 views4 answers
How to know the version of python using cmd
Python
1 vote111 views1 answer
Merge on row number python
Python
9 votes161 views6 answers
Jupyter notebook dark theme
Python
19 votes106 views5 answers
Pandas where retuning NaN
Python
-1 vote97 views1 answer
Numpy arange number of elements
Python
0 vote101 views1 answer
Convert numpy array to tfrecord and back
Python
1 vote99 views1 answer
Python to mac executable
Python
0 vote109 views1 answer
Arrow.get(null)
Python
0 vote99 views1 answer
Default argument with type hint python
Python