Azure Function Configuration

When calling Azure function from a web app the following error occurs:

SEC7120: Origin http://localhost:56960 not found in Access-Control-Allow-Origin header.

JavaScript code used in browser to call the Azure function:

var myHeaders = new Headers();
var init = {
method: 'GET',
headers: myHeaders,
mode: 'cors',
cache: 'default'

var div = document.getElementById("result");
fetch('', init)
.then(function (response) {
if (response.ok) {
return response.json();
throw new Error('Network response was not ok.');
}).then(function (json) {
div.textContent = JSON.stringify(json);
}).catch(function (error) {
div.textContent = 'There has been a problem with your fetch operation: ' + error.message;

There is a security measure put in place stopping just anybody from calling the function, which is a good idea, but can hinder your testing. To change this for your localhost browser testing the following can be done:

What you are doing is allowing any and all (*) origins to be able to call the function.

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