Best JavaScript code snippet using playwright-internal
frames.js
Source: frames.js
...959 }960 async _waitForFunctionExpression(metadata, expression, isFunction, arg, options, world = 'main') {961 const controller = new _progress.ProgressController(metadata, this);962 if (typeof options.pollingInterval === 'number') (0, _utils.assert)(options.pollingInterval > 0, 'Cannot poll with non-positive interval: ' + options.pollingInterval);963 expression = js.normalizeEvaluationExpression(expression, isFunction);964 const task = injectedScript => injectedScript.evaluateHandle((injectedScript, {965 expression,966 isFunction,967 polling,968 arg969 }) => {970 const predicate = arg => {971 let result = self.eval(expression);972 if (isFunction === true) {973 result = result(arg);974 } else if (isFunction === false) {975 result = result;976 } else {977 // auto detect....
javascript.js
Source: javascript.js
...150 return evaluateExpression(context, returnByValue, String(pageFunction), typeof pageFunction === 'function', ...args);151}152async function evaluateExpression(context, returnByValue, expression, isFunction, ...args) {153 const utilityScript = await context.utilityScript();154 expression = normalizeEvaluationExpression(expression, isFunction);155 const handles = [];156 const toDispose = [];157 const pushHandle = handle => {158 handles.push(handle);159 return handles.length - 1;160 };161 args = args.map(arg => (0, _utilityScriptSerializers.serializeAsCallArgument)(arg, handle => {162 if (handle instanceof JSHandle) {163 if (!handle._objectId) return {164 fallThrough: handle._value165 };166 if (handle._disposed) throw new Error('JSHandle is disposed!');167 const adopted = context.adoptIfNeeded(handle);168 if (adopted === null) return {169 h: pushHandle(Promise.resolve(handle))170 };171 toDispose.push(adopted);172 return {173 h: pushHandle(adopted)174 };175 }176 return {177 fallThrough: handle178 };179 }));180 const utilityScriptObjectIds = [];181 for (const handle of await Promise.all(handles)) {182 if (handle._context !== context) throw new Error('JSHandles can be evaluated only in the context they were created!');183 utilityScriptObjectIds.push(handle._objectId);184 } // See UtilityScript for arguments.185 const utilityScriptValues = [isFunction, returnByValue, expression, args.length, ...args];186 const script = `(utilityScript, ...args) => utilityScript.evaluate(...args)`;187 try {188 return await context._delegate.evaluateWithArguments(script, returnByValue, utilityScript, utilityScriptValues, utilityScriptObjectIds);189 } finally {190 toDispose.map(handlePromise => handlePromise.then(handle => handle.dispose()));191 }192}193async function evaluateExpressionAndWaitForSignals(context, returnByValue, expression, isFunction, ...args) {194 return await context.waitForSignalsCreatedBy(() => evaluateExpression(context, returnByValue, expression, isFunction, ...args));195}196function parseUnserializableValue(unserializableValue) {197 if (unserializableValue === 'NaN') return NaN;198 if (unserializableValue === 'Infinity') return Infinity;199 if (unserializableValue === '-Infinity') return -Infinity;200 if (unserializableValue === '-0') return -0;201}202function normalizeEvaluationExpression(expression, isFunction) {203 expression = expression.trim();204 if (isFunction) {205 try {206 new Function('(' + expression + ')');207 } catch (e1) {208 // This means we might have a function shorthand. Try another209 // time prefixing 'function '.210 if (expression.startsWith('async ')) expression = 'async function ' + expression.substring('async '.length);else expression = 'function ' + expression;211 try {212 new Function('(' + expression + ')');213 } catch (e2) {214 // We tried hard to serialize, but there's a weird beast here.215 throw new Error('Passed function is not well-serializable!');216 }...
Using AI Code Generation
1const { normalizeEvaluationExpression } = require('playwright/lib/server/common/JSHandle.js');2const { Page } = require('playwright/lib/server/page.js');3const { Frame } = require('playwright/lib/server/frame.js');4const { ElementHandle } = require('playwright/lib/server/dom.js');5const { JSHandle } = require('playwright/lib/server/common/JSHandle.js');6const { normalizeEvaluationExpression } = require('playwright/lib/server/common/JSHandle.js');7const { Page } = require('playwright/lib/server/page.js');8const { Frame } = require('playwright/lib/server/frame.js');9const { ElementHandle } = require('playwright/lib/server/dom.js');10const { JSHandle } = require('playwright/lib/server/common/JSHandle.js');11const elementHandle = new ElementHandle(12 new Frame(new Page(null, null), null, null),13);14const jsHandle = new JSHandle(15 new Frame(new Page(null, null), null, null),16);17const string = 'string';18const number = 1;19const boolean = true;20const object = { key: 'value' };21const array = [1, 2, 3, 4, 5];22const functionExpression = function () {23 return 'function';24};25const arrowFunctionExpression = () => 'arrow function';26const { normalizeEvaluationExpression } = require('playwright/lib/server/common/JSHandle.js');27const { Page } = require('playwright/lib
Using AI Code Generation
1const { normalizeEvaluationExpression } = require('playwright/lib/server/common/javascript');2const { parse } = require('playwright/lib/server/common/javascript');3const { format } = require('playwright/lib/server/common/javascript');4const { evaluate } = require('playwright/lib/server/common/javascript');5const { serializeResult } = require('playwright/lib/server/common/javascript');6const { serializeError } = require('playwright/lib/server/common/javascript');7const { parseCallMetadata } = require('playwright/lib/server/common/javascript');8const { createJSHandle } = require('playwright/lib/server/common/javascript');9const { createJSHandleFromSerializable } = require('playwright/lib/server/common/javascript');10const { createHandle } = require('playwright/lib/server/common/javascript');11const { createHandleFromSerializable } = require('playwright/lib/server/common/javascript');12const { createHandleFromElement } = require('playwright/lib/server/common/javascript');13const { createHandleFromElementHandle } = require('playwright/lib/server/common/javascript');14const { createHandleFromElementHandleForValue } = require('playwright/lib/server/common/javascript');15const { createHandleFromElementHandleForDebugger } = require('playwright/lib/server/common/javascript');16const { createHandleFromElementHandleForCall } = require('playwright/lib/server/common/javascript');17const { createHandleFromElementHandleForEvaluate } = require('playwright/lib/server/common/javascript');18const { createHandleFromElementHandleForSnapshot } = require('playwright/lib/server/common/javascript');19const { createHandleFromElementHandleForQuery } = require('playwright/lib/server/common/javascript');20const { createHandleFromElementHandleForQueryAll } = require('playwright/lib/server/common/javascript');21const { createHandleFromElementHandleForWaitFor } = require('playwright/lib/server/common/javascript');22const { createHandleFromElementHandleForWaitForAll } = require('playwright/lib/server/common/javascript');23const { createHandleFromElementHandleForWaitForFunction } = require('playwright/lib/server/common/javascript');24const { createHandleFromElementHandleForWaitForFunctionAll } = require('playwright/lib/server/common/javascript');25const { createHandleFromElementHandleForWaitForSelector } = require('playwright/lib/server/common/javascript');26const { createHandleFromElementHandleForWaitForSelectorAll } = require('playwright/lib/server/common/javascript');27const { createHandleFromElementHandleForWaitForXPath } = require('playwright/lib
Using AI Code Generation
1const { normalizeEvaluationExpression } = require('playwright/lib/server/common/javascript');2const { parse } = require('playwright/lib/server/common/javascript');3const { format } = require('playwright/lib/server/common/javascript');4const { evaluate } = require('playwright/lib/server/common/javascript');5const { serializeResult } = require('playwright/lib/server/common/javascript');6const { serializeError } = require('playwright/lib/server/common/javascript');7const { parseCallMetadata } = require('playwright/lib/server/common/javascript');8const { createJSHandle } = require('playwright/lib/server/common/javascript');9const { createJSHandleFromSerializable } = require('playwright/lib/server/common/javascript');10const { createHandle } = require('playwright/lib/server/common/javascript');11const { createHandleFromSerializable } = require('playwright/lib/server/common/javascript');12const { createHandleFromElement } = require('playwright/lib/server/common/javascript');13const { createHandleFromElementHandle } = require('playwright/lib/server/common/javascript');14const { createHandleFromElementHandleForValue } = require('playwright/lib/server/common/javascript');15const { createHandleFromElementHandleForDebugger } = require('playwright/lib/server/common/javascript');16const { createHandleFromElementHandleForCall } = require('playwright/lib/server/common/javascript');17const { createHandleFromElementHandleForEvaluate } = require('playwright/lib/server/common/javascript');18const { createHandleFromElementHandleForSnapshot } = require('playwright/lib/server/common/javascript');19const { createHandleFromElementHandleForQuery } = require('playwright/lib/server/common/javascript');20const { createHandleFromElementHandleForQueryAll } = require('playwright/lib/server/common/javascript');21const { createHandleFromElementHandleForWaitFor } = require('playwright/lib/server/common/javascript');22const { createHandleFromElementHandleForWaitForAll } = require('playwright/lib/server/common/javascript');23const { createHandleFromElementHandleForWaitForFunction } = require('playwright/lib/server/common/javascript');24const { createHandleFromElementHandleForWaitForFunctionAll } = require('playwright/lib/server/common/javascript');25const { createHandleFromElementHandleForWaitForSelector } = require('playwright/lib/server/common/javascript');26const { createHandleFromElementHandleForWaitForSelectorAll } = require('playwright/lib/server/common/javascript');27const { createHandleFromElementHandleForWaitForXPath } = require('playwright/lib
Using AI Code Generation
1const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');2console.log(normalizeEvaluationExpression('document.body.innerHTML'));3const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');4console.log(normalizeEvaluationExpression('document.body.innerHTML'));5const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');6console.log(normalizeEvaluationExpression('document.body.innerHTML'));7const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');8console.log(normalizeEvaluationExpression('document.body.innerHTML'));9const { normalizeEvaluationExpression } = require('playwright/lib/'));
Using AI Code Generation
1const { P g );2const { normolizeEvaluationExprassionlizeEvaluationExpression } = require('playwright/lib/server/common/javascript');3const p gw gen) Pa(4nsns.oexpressionx= pression);('docun.querySelectr("bd").nText');5outp o.cg(e);6cs{age } = require('p');7nst { Page } = require('playwright');8nst { rmgizvanus Panu(ver/common/javascript');9nst pa xssnr=u await page.evaluate(expressi('docun)n;.querySelectr("bd").nText');10nsole.resuut = awalt pag).ee(e);11consol.o(ul12nst { geg =eqnig Pa'();13t expesssta=epage. = new PExp;ssondocumen.quySeltr("bdy").ineTexconst expression = page.evaluateExpression('document.querySelector("body").innerText');14nln(ri).g(e);15e above Pog will give you the same o');16 vest poge = new Pege(17 expression=page.eHandl('documnt.eyStr("bdy").ineTexYou can also use the following code to get the function stringified:18n.g(e);19Nsw, let’ eneewhowPtogus( th o futst eoression =aaefancomct.erText');20console.log(expression);21gnw P();22t expess, t=spage. see howExpsesshonabdocumeni.quevySelltter("b dy").infe.Tex23e nst rosullw= aw it page.levaluae(ehe functi);24cdnsele.nog(eesult);25Th folon nst rwillu e.evalpo;eunctionnd eur h hnde:26t pae = w Pge();27cst e = page.evaluateHandlequerySelector("")ext28consrull=w wait pagl.eevaluae(ehe functi);29consol .log(resula);30cst{ Page 31const pag{ = new Pagee);32c}nst exp esseon = pagu.ere('pleright');querySelector("")ext33constnresult = twai ppage.evaluare(expresnion); = page.evaluateHandle('document.querySelector("body").innerText');
Using AI Code Generation
1const result = await page.evaluate(expression);2console.log(result);3 { aScip}l=wdlqlt f('unitt-p es');4const eight'); = querSlecto("div". exrContens'; = page.evaluateExpression('document.querySelector("body").innerText');5nsnseu await padg(expressio=odom.js');Scipt(xpesion)6console.log('Normalized expression: ', generate(normalizedExpression));7const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');8const { parseScript } = require('shift-parser');9const { default: generate } = require('shift-codegen');10const { default: staticMemberExpression } = require('shift-ast/dist/ast-types.js').default;11const expression = 'document.querySelector("div").textContent';12const normalizedExpression = normalizeEvaluationExpression(parseScript(expression));13console.log('Normalized expression: ', generate(normalizedExpression));14const normalizedExpressionAst = parseScript(generate(normalizedExpression));15normalizedExpressionAst.statements[0].expression.callee = staticMemberExpression({16});17console.log('Normalized expression: ', generate(normalizedExpressionAst));
Using AI Code Generation
1const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');2console.log(normalizeEvaluationExpression('document.body.innerHTML'));3const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');4console.log(normalizeEvaluationExpression('document.body.innerHTML'));5const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');6console.log(normalizeEvaluationExpression('document.body.innerHTML'));7const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');8console.log(normalizeEvaluationExpression('document.body.innerHTML'));9const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');10console.log(normalizeEvaluationExpression('document.body.innerHTML'));11const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');12console.log(normalizeEvaluationExpression('document.body.innerHTML'));13const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');14console.log(normalizeEvaluationExpression('document.body.innerHTML'));15const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');16console.log(normalizeEvaluationExpression('document.body.innerHTML'));17const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');18console.log(normalizeEvaluationExpression('document.body.innerHTML'));19const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');20console.log(normalizeEvaluationExpression('document.body.innerHTML'));21const { normalizeEvaluationExpression } = require('playwright/lib/server/dom.js');22console.log(normalizeEvaluationExpression('document.body.innerHTML'));
Jest + Playwright - Test callbacks of event-based DOM library
firefox browser does not start in playwright
Is it possible to get the selector from a locator object in playwright?
How to run a list of test suites in a single file concurrently in jest?
Running Playwright in Azure Function
firefox browser does not start in playwright
This question is quite close to a "need more focus" question. But let's try to give it some focus:
Does Playwright has access to the cPicker object on the page? Does it has access to the window object?
Yes, you can access both cPicker and the window object inside an evaluate call.
Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?
Exactly, or you can assign values to a javascript variable:
const cPicker = new ColorPicker({
onClickOutside(e){
},
onInput(color){
window['color'] = color;
},
onChange(color){
window['result'] = color;
}
})
And then
it('Should call all callbacks with correct arguments', async() => {
await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})
// Wait until the next frame
await page.evaluate(() => new Promise(requestAnimationFrame))
// Act
// Assert
const result = await page.evaluate(() => window['color']);
// Check the value
})
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