google.script.run not returning string

Question

Trying to figure out Google Apps Script for making Google docs addons. I have:

Code.gs

function helloWorld() {
    return "Hello World";
}

under code.gs which I call in:

Sidebar.html

console.log("This should say Hello World: " + google.script.run.helloWorld())

It returns:

This should say Hello World: undefined

What is the obvious thing I am missing?

123 · Accepted Answer · 2017-01-14 09:09:06Z

5

google.script.run won't return a value like you'd expect a usual Apps Script function to. Instead, you should use .withSuccessHandler(functionToRun)

Like this:

    google.script.run
        .withSuccessHandler(functionToRun)
        .helloWorld();

    function functionToRun(argument) {
        console.log("This should say Hello World: " + argument);
    }

In this example, the server-side Apps Script function helloWorld will run the client-side function functionToRun() and pass the result of helloWorld() as an argument.

edited Jan 14, 2017 at 9:09

answered Jan 8, 2017 at 1:09

123

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1 Comment

ughdotjs Over a year ago

I think I understand. It might take a little bit to click but my code is working now thank you!

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