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Old April 9th, 2005, 06:56 AM
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Default Randomly choose Operator from Array

Hi Guys,

I have an array that looks like this:

var theoperator = new array("<<", ">>", "^", "/", "+", "*")

Then I want to pass one of the operators into a routine that looks like this:

var thenum
var theseed = (Math.random() * 1000)
var theseed2 = (Math.random() / Math.random())
thenum =theseed theoperatorhere (Math.random() * theseed2) * 100000

Where it says 'theoperatorhere' is obviously where I would like to pass the operator to, randomly chosen from the 'theoperator' array. How do I do this?

Thanks in advance
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Old April 9th, 2005, 07:19 AM
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Default

First get your "random" operator:
Code:
var arrOperators = new Array("<<", ">>", "^", "/", "+", "*");
var iRandom = Math.floor((Math.random() * arrOperators.length)); 
var sOperator = arrOperators[iRandom];
Then use eval to evaluate:
Code:
var result = eval("theseed theoperatorhere (Math.random() * theseed2) * 100000");
I don't like using eval but your alternative is just a huge switch statement.


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Old April 9th, 2005, 07:49 AM
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Hi Joe,

thanks for your help, but I get an error here according to the debugger:

var sOperator = arrOperators[iRandom];

Error: Expected ';'.


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