If you send via SMTP, you can provide global and recipient-specific merge values using the X-MC-MergeVars header, regardless of your chosen merge language. For global_merge_vars and merge_vars, provide the name of the merge tag and the value to be used as key–value pairs: Use the merge_var parameter to store recipient-specific values if you’re sending to more than one recipient at a time. These will be used in case a recipient-specific value isn’t defined. You can provide merge data via the sending API calls ( messages/send or messages/send-template) or template-rendering call ( templates/render), giving default values for merge tags by using the global_merge_vars parameter. If you're sending via SMTP, custom SMTP headers are limited in length, so there’s an upper limit on the amount of content that can be passed in a single SMTP header. Content length for merge tags in Mailchimp Transactional is generally unlimited, so you can give as little or as much data as needed. Merge tags can be composed of alphanumeric characters and underscores. Note: If you export a template from your main Mailchimp account and Handlebars is set as your default merge language in Mailchimp Transactional, we’ll convert Mailchimp merge tags to Handlebars for you automatically. With SMTP, set the X-MC-MergeLanguage header to the language of your choice. With the API, set the merge_language parameter in messages/send or messages/send-template request. You can also change the merge language on a per-message basis using the Transactional API or with an SMTP header. To set your merge language, navigate to Sending Defaults and select Mailchimp or Handlebars from the Merge Language drop-down menu. We also offer a custom implementation of Handlebars, which is open source and offers greater flexibility. You may already be familiar with the Mailchimp merge language from creating and editing Mailchimp templates. There are two main ways to add dynamic content via merge tags: Handlebars or the Mailchimp merge language. You can add them to stored templates in your account or to content that you provide at the time of sending in your API request or SMTP message. If you want to check out our trainings be sure to take a look at our Web Development training page.Merge tags let you personalize templated messages with recipients’ names, addresses, order information, or other customized content. Now that our code is updated, here is what the final dropdown looks like:Īnd once one of the options has been selected, “Select One” disappears just like a good placeholder should: Hidden – once you select something else it will disappear Selected – when the page loads it will be selected by default Let’s go over the attributes really quickly to see what they do:ĭisabled – makes it so it can’t be clicked or selected Now if we run it the option “Select One” acts as a placeholder and will tell the user what to do while not being able to be selected as one of the dropdown menu options. So what we’ll want to do is add another option tag that will act as our placeholder and give it a few attributes. All we have are the options and that’s it. The problem with this is there are no instructions telling the user what to do. This is the HTML code used to create this dropdown menu: But what about drop-down menus like this? It’s a useful way to prompt the user to do what you want and not lose any space by doing so. The text “Type Here” will disappear when you start to type anything into the box and it will re-appear when you delete it. It would create a text box with a placeholder in it which you can see below: If you were to create an input text box like this: In HTML there’s this nifty attribute called the placeholder. Home | SkillForge Blog | How to create a placeholder on a select dropdown in HTML How to create a placeholder on a select dropdown in HTML
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