freeCodeCamp/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/basic-javascript/storing-values-with-the-assignment-operator.chinese.md

id, title, challengeType, videoUrl, localeTitle

id	title	challengeType	videoUrl	localeTitle
56533eb9ac21ba0edf2244a8	Storing Values with the Assignment Operator	1		使用赋值运算符存储值

Description

在JavaScript中，您可以使用赋值运算符将值存储在变量中。 myVariable = 5;这将Number值5分配给myVariable 。作业总是从右到左。在将值分配给运算符左侧的变量之前，将解析=运算符右侧的所有内容。

myVar = 5;
myNum = myVar;

这将为myVar分配5 ，然后再次将myVar解析为5并将其分配给myNum 。

Instructions

将值7分配给变量a 。分配的内容a变量b 。

Tests

tests:
  - text: 不要更改行上方的代码
    testString: 'assert(/var a;/.test(code) && /var b = 2;/.test(code), "Do not change code above the line");'
  - text: <code>a</code>的值应为7
    testString: 'assert(typeof a === "number" && a === 7, "<code>a</code> should have a value of 7");'
  - text: <code>b</code>的值应为7
    testString: 'assert(typeof b === "number" && b === 7, "<code>b</code> should have a value of 7");'
  - text: <code>a</code>应分配给<code>b</code> <code>=</code>
    testString: 'assert(/b\s*=\s*a\s*;/g.test(code), "<code>a</code> should be assigned to <code>b</code> with <code>=</code>");'

Challenge Seed

// Setup
var a;
var b = 2;

// Only change code below this line

Before Test

if (typeof a != 'undefined') {
  a = undefined;
}
if (typeof b != 'undefined') {
  b = undefined;
}

After Test

console.info('after the test');

Solution

// solution required