How to create dynamic if-conditions

Question

I want to make a dynamic filter method, but don't know how to include conditions dynamically.

Example

var do_test_1 = true,
    do_test_2 = false,
    do_test_3 = true;

Now there are three tests:

if (foo == bar)  // test 1
if (john == doe) // test 2
if (jane == doe) // test 3

Now I want to build a dynamic if clause, based on the do_test vars.

Real use case

I have a list of tasks and want to filter them:

If the "assigned to me" filter is active, it should return only the the tasks that are assigned to me.
If the "high priority" filter and the "assigned to me" filter is active, it should return only the tasks that are assigned to me and have a high priority.
... and so on ...

I played around with the filter method, but I only get it working with an OR logic (show tasks that are assigned to me or have a high priority):

var $show = $tasks.filter(function(index, task) {
  var $task = $(task);
  return ((task.data('assigned') && filters['mytasks']) || (task.data('priority') == 3 && filters['priority']))
});

Amit Joki · Accepted Answer · 2014-02-15 14:21:04Z

3

use eval() function

for(var i=0;i<3;i++){
    var f=i+1;
    eval("if(f==i+1){alert(i);}");   
}

Demo: http://jsfiddle.net/ke42b/2/

This is just a tip on how to create dynamic if conditions. Now you know how to create dynamic if conditions.

Code accordingly to your needs !

edited Feb 15, 2014 at 14:21

answered Feb 15, 2014 at 14:14

Amit Joki

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