Insert variable's value as a parameter and its value within object's function parameters

Question

(If someone has a better title, go ahead)

I want to insert the value of a variable within a function's parameters.

Here's an example to show the issue. here's a sample of strElements value: elements : "elm1,elm2"

var p_mode = "exact";
var strElements = "elements : ";
if (typeof elements != "undefined") {
    strElements += elements + ',';
} else {
    strElements = "";
}

tinyMCE.init({
    mode: p_mode,
    /* Magic here */
    strElements
    /* other params */
});

I tried doing an eval and it doesn't seem to work either.

eval('tinyMCE.init({
    mode: '+p_mode+','
    +strElements+'
    /* other params */
});');

Always avoid using an eval statement, it is one of the most dangerous things you can do. Why not just pass then in as parameters? — Fermis, Nov 24 '14 at 18:46
as you can see in the first code block, this is what I tried first and it simply does not work. `Unexpected identifier ` The JavaScript interprets the variable as a parameter by itself with no value. — Jeff Noel, Nov 24 '14 at 18:52

score 2 · Accepted Answer · edited May 23 '17 at 11:57

2

Avoid eval at (almost) all costs. It's not at all necessary here, anyway.

var p_mode = "exact";

var initParms = {
  mode: p_mode
};

if (typeof elements != "undefined")
  initParams.elements = elements;

tinyMCE.init( initParams );

edited May 23 '17 at 11:57

Community

1
1

answered Nov 24 '14 at 18:52

Paul Roub

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Insert variable's value as a parameter and its value within object's function parameters

1 Answers1