Execute JavaScript code stored as a string

Question

How do I execute some JavaScript that is a string?

function ExecuteJavascriptString()
{
    var s = \"alert(\'hello\')\";
    // how do I get a browser to al         


        

Answer 1

I was answering similar question and got yet another idea how to achieve this without use of eval():

const source = "alert('test')";
const el = document.createElement("script");
el.src = URL.createObjectURL(new Blob([source], { type: 'text/javascript' }));
document.head.appendChild(el);

In the code above you basically create Blob, containing your script, in order to create Object URL (representation of File or Blob object in browser memory). Since you have src property on