Eval()

Javascript execute string code

var theInstructions = "alert('Hello World'); var x = 100";

var F=new Function (theInstructions);

return(F());

Source: stackoverflow.com

Calculate string value in javascript, not using eval

let str = "12/5*9+9.4*2"

let res1 = eval(str)
console.log('res1:', res1)

let res2 = (new Function('return '+str)())
console.log('res2:', res2)

Source: stackoverflow.com

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()

#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

Eval 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 vote192 views1 answer
Import statsmodels.api as sm
Python
0 vote188 views1 answer
Python combine nested for loops
Python
1 vote250 views1 answer
Pandas dataframe convert nan to string
Python
-1 vote376 views1 answer
Combination of 1 2 3 4 5 python
Python
1 vote142 views3 answers
Python is float function
Python
0 vote236 views1 answer
Pass query params django template
Python Django
0 vote200 views1 answer
Python recognize every white color
Python
9 votes180 views2 answers
Display maximum columns pandas
Python
1 vote220 views1 answer
Python convert datetime.timedelta into seconds
Python
2 votes154 views1 answer
EnvironmentError command line
Python