Think of it like you're just calling JavaScript functions. You can't put a for loop inside a function call:

return tbody(
    for (var i = 0; i < numrows; i++) {
        ObjectRow()
    } 
)

But you can make an array, and then pass that in:

var rows = [];
for (var i = 0; i < numrows; i++) {
    rows.push(ObjectRow());
}
return tbody(rows);

You can use basically the same structure when working with JSX:

var rows = [];
for (var i = 0; i < numrows; i++) {
    // note: we add a key prop here to allow react to uniquely identify each
    // element in this array. see: https://reactjs.org/docs/lists-and-keys.html
    rows.push(<ObjectRow key={i} />);
}
return <tbody>{rows}</tbody>;

Incidentally, my JavaScript example is almost exactly what that example of JSX transforms into. Play around with Babel REPL to get a feel for how JSX works.

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$ git branch new-branch-name origin/old-branch-name
$ git push origin --set-upstream new-branch-name
$ git push origin :old-branch-name

It is now available with the latest PM2 version:

{ 
  apps : [{
    name : 'API',
    script : 'api.js',
    interpreter : 'node@6.9.1'
 }]
}

https://github.com/Unitech/pm2/blob/master/test/fixtures/nvm-node-version/ecosystem.json#L12

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const result = _.map({a: 1, b: 2}, function(value, key) {
    return value + key;
});

Since nobody has added the obvious solution yet which works fine for two comparisons, I'll offer it:

if (foobar == foo || foobar == bar) {
     //do something
}

And, if you have lots of values, then I'd suggest making a Set as this makes very clean and simple comparison code and it's fast at runtime:

// pre-construct the Set
var tSet = new Set([foo, bar, test1, test2, test3]);

// test the Set at runtime
if (tSet.has(foobar)) {
    // do something
}

For pre-ES6, you can get a Set polyfill of which there are many. One is described in this other answer.

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Mike Bostock’s Block 3808218

Jane Pong’s Block 9b9e606e9876e34385cc4aeab188ed73

The missing link between spreadsheets and data visualization.