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1 <!-- This Source Code Form is subject to the terms of the Mozilla Public |
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2 - License, v. 2.0. If a copy of the MPL was not distributed with this |
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3 - file, You can obtain one at http://mozilla.org/MPL/2.0/. --> |
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4 |
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5 <html> |
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6 <body> |
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7 <button id=post>post!</button> |
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8 </body> |
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9 <script> |
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10 window.addEventListener("message", event => { |
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11 console.log("Document message", event, event.data, event.source !== window && event.source === window.parent); |
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12 }); |
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13 window.addEventListener("click", event => { |
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14 if (event.target.id === "post") { |
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15 console.log("click!") |
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16 window.parent.postMessage("ping!", "*"); |
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17 } |
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18 }); |
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19 console.log(window.parent === window) |
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20 </script> |
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21 </html> |