> javascript > console.log('WeTravel GA4 tracking script loaded'); > > const eventMethod = window.addEventListener ? 'addEventListener' : 'attachEvent'; > const eventer = window[eventMethod]; > const messageEvent = eventMethod === 'attachEvent' ? 'onmessage' : 'message'; > > console.log('WeTravel postMessage listener being registered'); > > eventer(messageEvent, (e) => { > console.log('WeTravel message received:', e.data); > }); >
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Online Intake

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