Supported expression syntax

[ultraq]

A list of the expression syntaxes currently supported in the latest version of ThymeleafJS. The full list of expression syntaxes was taken from the Thymeleaf docs here: https://www.thymeleaf.org/doc/tutorials/3.0/usingthymeleaf.html#standard-expression-syntax

Simple expressions

• [x] Variable Expressions: ${...}
• [ ] Selection Variable Expressions: *{...}
• [x] Message Expressions: #{...}
• [x] Link URL Expressions: @{...}
• [x] Fragment Expressions: ~{...}

Complex expressions

• [x] Iteration expressions

Literals

• [x] Text literals: 'one text', 'Another one!',...
• [x] Number literals: 0, 34, 3.0, 12.3,...
• [x] Boolean literals: true, false
• [ ] Null literal: null
• [x] Literal tokens: one, sometext, main,...

Text operations

• [x] String concatenation: +
• [x] Literal substitutions: |The name is ${name}|

Arithmetic operations

• [ ] Binary operators: +, -, *, /, %
• [ ] Minus sign (unary operator): -

Boolean operations

• [x] Binary operators:
  • [x] &&
  • [x] and
  • [x] ||
  • [x] or
• [ ] Boolean negation (unary operator):
  • [x] !
  • [ ] not

Comparisons and equality

• [ ] Comparators:
  • [ ] >
  • [ ] <
  • [ ] >=
  • [ ] <=
  • [ ] gt
  • [ ] lt
  • [ ] ge
  • [ ] le
• [x] Equality operators:
  • [x] ==, ===
  • [x] !=, !==
  • [x] eq
  • [x] ne

Conditional operators

• [x] If-then: (if) ? (then)
• [x] If-then-else: (if) ? (then) : (else)
• [ ] Default: (value) ?: (defaultvalue)

Special tokens

• [ ] No-Operation: _

[rob-bar]

The message expression is one that would be really handy. I will have a look on how we can implement it

[rob-bar]

How would we do a .substring now?

[ultraq]

I think you can do a .substring on any string now as both Java and JavaScript both call that method "substring". I haven't tried it with that method in particular, but being able to do method calls on objects is already possible.

[rob-bar]

alright!

[oaj]

Hi, I have a problem

    let templateEngine = new TemplateEngine({
        ...STANDARD_CONFIGURATION,
        messageResolver: async (key, parameters) => resolveMessage(key, lang, 'defaultMessage')
    })

const context = { user: user } templateEngine.processFile(fileName, context)

, it work on tags loike this with #

, but not on variable expressions

    <p th:text="#{email.activation.greeting(${user.firstName})}">
        Dear
    </p>

, this results in - Dear{0}

The templates I have worked fine with spring thymeleaf

Did I forget something ?