Chrome Extension - javascript in onClick function only works when debugging
Question
I am creating a Chrome Extension that upon clicking the extension icon will present the user with a button, clicking that button will open a new tab which will display a parameter passed to it from the original page. The strange thing is that this will work if I debug it (ie right click the extension icon and click "Inspect popup"), but it will just show a blank page upon clicking the button if I'm not debugging.
manifest.json
{
"name": "test name",
"version" : "0.1",
"description": "test description",
"browser_action":
{
"default_icon": "icon_128.png",
"popup": "test.html"
},
"permissions": [
"tabs", "http://*/*", "https://*/*"
]
}
test.html
<HTML>
<BODY>
<script type="text/javascript">
var currentWindowID = -1;
window.onload = function(e){
chrome.windows.getCurrent(function(w)
{
currentWindowID = w.id;
});
}
function openNextPage(){
console.log("in openNextPage");
chrome.tabs.create(
{url: "test2.html"},
function(tab)
{
chrome.tabs.sendRequest(tab.id, {someParam: currentWindowID});
}
);
console.log("exiting openNextPage");
}
</script>
<input type="button" value="Show next page" onClick="openNextPage()">
</BODY>
</HTML>
test2.html
<HTML>
<script type="text/javascript">
chrome.extension.onRequest.addListener(function(request)
{
document.write("<h1>test</h1>");
document.write("<h2>value=" + request.someParam + "</h2>");
});
</script>
</HTML>
1 answers
solution1
2 ACCPTED 2012-02-25 17:38:47
The browser will activate the new tab when it is created, and your popup will be closed. Therefore, the callback is never called from chrome.tabs.create . The background page is a more proper place for such code.
test.html
<HTML>
<BODY>
<script type="text/javascript">
var currentWindowID = -1;
window.onload = function(e){
chrome.windows.getCurrent(function(w)
{
currentWindowID = w.id;
});
}
function openNextPage() {
var bg = chrome.extension.getBackgroundPage();
bg.openNextPage(currentWindowID);
}
</script>
<input type="button" value="Show next page" onClick="openNextPage()">
</BODY>
</HTML>
background.html
<HTML>
<BODY>
<script type="text/javascript">
function openNextPage(currentWindowID) {
console.log("in openNextPage");
chrome.tabs.create(
{url: "test2.html"},
function(tab)
{
chrome.tabs.sendRequest(tab.id, {someParam: currentWindowID})
}
);
console.log("exiting openNextPage");
}
</script>
</BODY>
</HTML>
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