---
id: 56533eb9ac21ba0edf2244d3
title: Comparison with the Strict Inequality Operator
challengeType: 1
videoUrl: ''
localeTitle: 与严格不等式算子的比较
---
## Description
严格不等式运算符（ !== ）与严格相等运算符的逻辑相反。它意味着“严格不等于”并返回false ，其中严格相等将返回true ， 反之亦然 。严格的不等式不会转换数据类型。 例子 3！== 3 //假
3！=='3'//是的
4！== 3 //是的
## Instructions
将strict inequality operator添加到if语句，以便当val不严格等于17时，函数将返回“Not Equal”
## Tests
```yml
tests:
- text: testStrictNotEqual(17)应返回“Equal”
testString: 'assert(testStrictNotEqual(17) === "Equal", "testStrictNotEqual(17) should return "Equal"");'
- text: testStrictNotEqual("17")应返回“Not Equal”
testString: 'assert(testStrictNotEqual("17") === "Not Equal", "testStrictNotEqual("17") should return "Not Equal"");'
- text: testStrictNotEqual(12)应该返回“Not Equal”
testString: 'assert(testStrictNotEqual(12) === "Not Equal", "testStrictNotEqual(12) should return "Not Equal"");'
- text: testStrictNotEqual("bob")应返回“Not Equal”
testString: 'assert(testStrictNotEqual("bob") === "Not Equal", "testStrictNotEqual("bob") should return "Not Equal"");'
- text: 你应该使用!==运算符
testString: 'assert(code.match(/(val\s*!==\s*\d+)|(\d+\s*!==\s*val)/g).length > 0, "You should use the !== operator");'
```
## Challenge Seed
```js
// Setup
function testStrictNotEqual(val) {
// Only Change Code Below this Line
if (val) {
// Only Change Code Above this Line
return "Not Equal";
}
return "Equal";
}
// Change this value to test
testStrictNotEqual(10);
```
## Solution
```js
// solution required
```