Question:

Explain what is Angular Expression? Explain what is key difference between angular expressions and JavaScript expressions?

Answer:

Like JavaScript,  Angular expressions are code snippets that are usually placed in binding such as {{ expression }}

The key difference between the JavaScript expressions and Angular expressions

  • Context : In Angular, the expressions are evaluated against a scope object, while the Javascript expressions are evaluated against the global window
  • Forgiving: In Angular expression evaluation is forgiving to null and undefined, while in Javascript undefined properties generates TypeError or ReferenceError
  • No Control Flow Statements: Loops, conditionals or exceptions cannot be used in an angular expression
  • Filters: To format data before displaying it you can use filters

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