I need js method eval()
in Flutter Dart code. How I can get it? I try import
import 'dart:html';
import 'dart:js';
But I still do not have eval()
method. Any idea how to import this method?
I need evaluate expression like in this js sample: https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_eval but in Dart code, so I try import this eval() function from dart:js but my compiler still not see eval()
method.
HTML code (working):
<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<h1>This is a Heading</h1>
<p>This is a paragraph.</p>
<script>
var a = "person.name=='James'";
var person = {'name':'James'};
var result = eval(a);
console.log(result);
</script>
</body>
</html>
Dart code (not working - do not see definition of eval though import html and js lib):
import 'dart:html';
import 'dart:js';
void main() {
var a = "person.name=='James'";
var person = {'name':'James'};
var result = eval(a);
print(result);
}
Any idea how to import javascript method eval()
into dart code?
CodePudding user response:
Try this one:
final result = js.context.callMethod("eval",a);
print(result);