76 lines
1.7 KiB
Markdown
76 lines
1.7 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244b9
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title: Construye cadenas con variables
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cqk8rf4'
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forumTopicId: 16805
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dashedName: constructing-strings-with-variables
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---
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# --description--
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A veces necesitarás construir una cadena, al estilo [Mad Libs](https://en.wikipedia.org/wiki/Mad_Libs). Al usar el operador de concatenación (`+`), puedes insertar una o más variables en una cadena que estés construyendo.
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Ejemplo:
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```js
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var ourName = "freeCodeCamp";
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var ourStr = "Hello, our name is " + ourName + ", how are you?";
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```
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`ourStr` tendrá como valor la cadena `Hello, our name is freeCodeCamp, how are you?`.
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# --instructions--
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Establece `myName` en una cadena igual a tu nombre y construye `myStr` con `myName` entre las cadenas `My name is` y `and I am well!`
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# --hints--
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`myName` debe establecerse en una cadena de al menos 3 caracteres de largo.
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```js
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assert(typeof myName !== 'undefined' && myName.length > 2);
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```
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Debes usar dos operadores `+` para construir `myStr` con `myName` dentro de él.
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```js
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assert(code.match(/["']\s*\+\s*myName\s*\+\s*["']/g).length > 0);
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```
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# --seed--
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## --after-user-code--
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```js
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(function(){
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var output = [];
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if(typeof myName === 'string') {
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output.push('myName = "' + myName + '"');
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} else {
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output.push('myName is not a string');
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}
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if(typeof myStr === 'string') {
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output.push('myStr = "' + myStr + '"');
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} else {
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output.push('myStr is not a string');
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}
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return output.join('\n');
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})();
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```
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## --seed-contents--
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```js
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// Only change code below this line
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var myName;
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var myStr;
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```
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# --solutions--
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```js
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var myName = "Bob";
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var myStr = "My name is " + myName + " and I am well!";
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```
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