How to Handle HTML and JSON Insertion in Go Templates Without Escaping Issues?

Handling HTML and JSON Insertion in Go Templates

Inserting HTML or JSON into Go templates can lead to escaping and other output formatting issues. To ensure the intended output, follow these guidelines:

Inserting HTML:

Use template.HTML instead of strings to prevent escaping. Example:

<code class="go">tplVars := map[string]interface{}{
    "Html": template.HTML("<p>Paragraph</p>"),
}</code>

Inserting JSON:

Pass JSON data as an interface{} value. Example:

<code class="go">type Data struct {
    Html  string
    Json  interface{}
}</code>

In the template:

<code class="go">{{.Data.Html}} {{.Data.Json}}</code>

Additional Notes:

• Using template.HTML preserves HTML entities and ensures proper rendering.
• Passing JSON data directly as an interface{} prevents unnecessary type conversion and automatic escaping.
• Refer to the provided link for a runnable example: https://play.golang.org/p/QKKpQJ7gIs

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