How Can I Execute JavaScript from a String, and What Are the Security Risks?

Executing JavaScript Code Stored as a String

Executing JavaScript code that is stored as a string can be achieved using the eval() function. Consider the following example:

function ExecuteJavascriptString() {
  var s = "alert('hello')";
  eval(s);
}

By calling eval(s), the JavaScript code stored in the s string is executed, and the "hello" alert is displayed.

Caution: It is important to note that using eval() poses a significant security risk. It allows arbitrary code to be executed, making it vulnerable to malicious attacks. Therefore, it is strongly recommended to use alternative methods for executing JavaScript code when possible.

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