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35 lines
964 B
35 lines
964 B
4 years ago
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## Placeholders
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Enough about numbers, let's check out what we can do with strings !
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### Strings `` `${placeholders}` ``
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The first one are `placeholders` for using values inside our strings, they have
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there own syntax: `${}`.
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#### Example
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```js
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console.log(`5 + 10 = ${5 + 10} = 15`) // -> 5 + 10 = 15 = 15
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```
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**Note that it only works using:** the `` ` `` backtick, not the `"` or `'`
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quotes.
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```js
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// here, with the use of quotes instead of backticks, the placeholder is not evaluated and we see it as text:
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console.log('5 + 10 = ${5 + 10} = 15') // -> 5 + 10 = ${5 + 10} = 15
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```
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### Instructions
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We will provide a variable `name` and `age`. They will be pre-declared by us.
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Declare a `presentation` variable of the string:
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> `Hello, my name is` **name** `and I'm` **age** `years old`
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But use placeholders to build the string you will put inside `presentation`.
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Put the values of the provided variables `age` and `name` inside those
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placeholders.
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