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 vote98 views1 answer
Come mettere una scelta su python
Python
0 vote109 views2 answers
Python combine two lists into matrix
Python
3 votes129 views2 answers
Python button click code
Python
34 votes98 views5 answers
Remove substring python
Python
3 votes101 views1 answer
Isaplha in python
Python
75 votes139 views6 answers
Working directory python
Python
0 vote135 views1 answer
Allow Complex Number like "1+2j" to be treated as valid number
Python
0 vote80 views1 answer
Python loop break on keypress
Python
10 votes93 views3 answers
__name__ == '__main__'
Python
18 votes97 views4 answers
Create a venv
Python