Calculate mathematical expression within string in angularJS

Question

How do I evaluate the mathematical expression within a string and assign it to a numerical value in angularJS?

Eg: var value = 10;

var someValue = "Math.min(value * 0.22, 106800)". I need someValue to be a valid integer of 2.2.

Is this something which can be done by angularJS?

Raj · Accepted Answer · 2013-11-14 03:56:28Z

4

One way of doing this would be by injecting 'Math' into your scope and using it in say a controller

$scope.Math = window.Math;

answered Nov 14, 2013 at 3:56

Raj

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1 Comment

i like your solution better. you could run Math functions from the scope as well.. like this. jsfiddle.net/ayDAn

Kobkrit Viriyayudhakorn · Accepted Answer · 2013-11-14 04:00:29Z

2

Use eval.

var value = 10;
var someValue = eval("Math.min(value * 0.22, 106800)");
console.log(someValue);

And it will be printed in console 2.2

answered Nov 14, 2013 at 4:00

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I would highly suggest not doing this if it's a dynamic string from user input. You might consider using Angular's $eval method instead.