sf-chat-snippet.html

 <style>
  .embeddedServiceHelpButton .helpButton .uiButton {
    background-color: #0068B5;
    font-family: "Founders Grotesk", "Roboto", sans-serif;
    font-size: 0.600em;
    min-width: 9em;
    max-width: 11em;
  }
  .embeddedServiceHelpButton .helpButton .uiButton:focus {
    outline: 1px solid #0068B5;
  }
  @media screen and (min-width: 600px) {
    .embeddedServiceHelpButton .helpButton .uiButton {
      font-size: 0.800em;
      max-width: 10em;
    }
  }
</style>
<script>
  var initESW = function(gslbBaseURL) {
    if (typeof window !== undefined) {
      if (!window.location.href.includes('/breezy-braces')) {
        return
      }
    }

    embedded_svc.settings.displayHelpButton = true; //Or false
    embedded_svc.settings.language = ''; //For example, enter 'en' or 'en-US'
    embedded_svc.settings.defaultMinimizedText = "Chat with us";
    embedded_svc.settings.offlineSupportMinimizedText = "Contact us";
    embedded_svc.settings.loadingText = "Just a second";
    embedded_svc.settings.extraPrechatInfo = [{
      "entityFieldMaps": [{
        "doCreate": true,
        "doFind": false,
        "fieldName": "LastName",
        "isExactMatch": false,
        "label": "Last Name"
      }, {
        "doCreate": true,
        "doFind": false,
        "fieldName": "FirstName",
        "isExactMatch": false,
        "label": "First Name"
      },  {
        "doCreate": true,
        "doFind": false,
        "fieldName": "Phone",
        "isExactMatch": false,
        "label": "Phone number"
      },{
        "doCreate": true,
        "doFind": true,
        "fieldName": "Email",
        "isExactMatch": true,
        "label": "Email"
      }],
      "entityName": "Contact",
      "saveToTranscript": "Contact",
      "showOnCreate": true
    }];
    //embedded_svc.settings.defaultMinimizedText = '...'; //(Defaults to Chat with an Expert)
    //embedded_svc.settings.disabledMinimizedText = '...'; //(Defaults to Agent Offline)
    //embedded_svc.settings.loadingText = ''; //(Defaults to Loading)
    //embedded_svc.settings.storageDomain = 'yourdomain.com'; //(Sets the domain for your deployment so that visitors can navigate subdomains during a chat session)
    // Settings for Chat
    //embedded_svc.settings.directToButtonRouting = function(prechatFormData) {
      // Dynamically changes the button ID based on what the visitor enters in the pre-chat form.
      // Returns a valid button ID.
    //};
    //embedded_svc.settings.prepopulatedPrechatFields = {}; //Sets the auto-population of pre-chat form fields
    //embedded_svc.settings.fallbackRouting = []; //An array of button IDs, user IDs, or userId_buttonId
    //embedded_svc.settings.offlineSupportMinimizedText = '...'; //(Defaults to Contact Us)
    embedded_svc.settings.enabledFeatures = ['LiveAgent'];
    embedded_svc.settings.entryFeature = 'LiveAgent';
    embedded_svc.init(
      'https://hellotend--testing.my.salesforce.com',
      'https://testing-hellotend.cs197.force.com/liveAgentSetupFlow',
      gslbBaseURL,
      '00D040000004ccJ',
      'Chat',
      {
        baseLiveAgentContentURL: 'https://c.la3-c1cs-ia4.salesforceliveagent.com/content',
        deploymentId: '5722E000000DYRO',
        buttonId: '57304000000GmdN',
        baseLiveAgentURL: 'https://d.la3-c1cs-ia4.salesforceliveagent.com/chat',
        eswLiveAgentDevName: 'Chat',
        isOfflineSupportEnabled: true
      }
    );
  };

  if (!window.embedded_svc) {
    var s = document.createElement('script');
    s.setAttribute('src', 'https://hellotend--testing.my.salesforce.com/embeddedservice/5.0/esw.min.js');
    s.onload = function() {
      initESW(null);
    };

    setTimeout(function(){
      document.body.appendChild(s);
    }, 5000);

  } else {
    initESW('https://service.force.com');
  }
  </script>