зеркало из https://github.com/mozilla/gecko-dev.git
73 строки
1.9 KiB
JavaScript
73 строки
1.9 KiB
JavaScript
"use strict";
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// Node.js script to test basic CDP behaviors against Firefox and Chromium.
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//
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// Install chrome-remote-interface, the npm package for a CDP client in node:
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//
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// % npm install chrome-remote-interface
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//
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// Run Firefox or Chromium with server turned on:
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//
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// % ./mach run --remote-debugging-port 9222
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// % firefox --remote-debugging-port 9222
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// % chromium-browser --remote-debugging-port=9222
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//
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// Then run this script:
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//
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// % node demo.js
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const CDP = require("chrome-remote-interface");
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async function demo() {
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let client;
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try {
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client = await CDP();
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const {Log, Network, Page, Runtime} = client;
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// Bug 1553756, Firefox requires `contextId` argument to be passed to
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// Runtime.evaluate, so fetch the current context id it first.
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Runtime.enable();
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const { context } = await Runtime.executionContextCreated();
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const contextId = context.id;
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let { result } = await Runtime.evaluate({
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expression: "this.obj = {foo:true}; this.obj",
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contextId,
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});
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console.log("1", result);
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({ result } = await Runtime.evaluate({
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expression: "this.obj",
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contextId,
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}));
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console.log("2", result);
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({ result } = await Runtime.evaluate({
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expression: "this.obj.foo",
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contextId,
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}));
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console.log("3", result);
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// receive console.log messages and print them
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Log.enable();
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Log.entryAdded(({entry}) => {
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const {timestamp, level, text, args} = entry;
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const msg = text || args.join(" ");
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console.log(`${new Date(timestamp)}\t${level.toUpperCase()}\t${msg}`);
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});
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// turn on navigation related events, such as DOMContentLoaded et al.
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await Page.enable();
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const onLoad = Page.loadEventFired();
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await Page.navigate({url: "data:text/html,test-page<script>console.log('foo');</script><script>'</script>"});
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await onLoad;
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} catch (e) {
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console.error(e);
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} finally {
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if (client) {
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await client.close();
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}
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}
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}
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demo();
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