Pass javascript function as data-* attribute and execute

Question

We know such syntaxes as below, when defining a value for onClick attribute:

&         


        

Answer 1

One way is to use eval()

jQuery(".container").on("click", "button.marker", function (e) {
    var callback = jQuery(e.currentTarget).data("callback");

    var x = eval(callback)
    if (typeof x == 'function') {
        x()
    }
});

Demo: Fiddle

Note: Make sure it is safe in your environment, ie there is no possibility of script injection because of bad input from users

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