To execute a code string, you can use the eval() global function in JavaScript.
Consider a string which itself is a valid piece of JavaScript code like this,
// javascript code as string
const codeStr = `
if(12 > 10){
console.log('12 is greater')
}`;
As you can see the above string is an actual valid piece of if statement in JavaScript.
To run this string, let's use the global eval() function in JavaScript.
// javascript code as string
const codeStr = `
if(12 > 10){
console.log('12 is greater')
}`;
// run string using eval() function
eval(codeStr); // 12 is greater
- The code string will be executed using the
eval()function. - This is useful when having an application of some kind where you can receive the JavaScript code as the string and then needs to be executed.
- This can also make serious problems to the application if you are not careful enough using the
eval()function and it is not at all recommended t use it in a real-life application. ✨
See this example live in JSBin.