如何使用ES6脚本的模板文字

问题描述

我一直在尝试解决有关hackerrank的模板文字问题。它在我的本地IDE上运行良好，但在Hackerrank IDE上却报错。 这是代码2加两个数字并使用模板文字打印结果。

const sum = () => {
  let a=1;
  let b=2;
  console.log(`The sum of ${a} and ${b} is ${a + b}`);
}
module.exports = {sum}

但是它会产生以下错误。

npm WARN template-literals@1.0.0 No repository field.

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules/fsevents):

npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

audited 522 packages in 6.264s

found 611 vulnerabilities (378 low,233 high)

  run `npm audit fix` to fix them,or `npm audit` for details

> template-literals@1.0.0 test /projects/challenge

> mocha test --reporter mocha-junit-reporter

The sum of 1 and 2 is 3

npm ERR! Test Failed.  See above for more details.

解决方法

我想添加我的观点。

const sum = (a,b) => {
  return `The sum of ${a} and ${b} is ${a + b}`;
}
module.exports = {sum}

,

这是一个简单的例子。

const sum = (a = 1,b = 2) => {
    return `The sum of ${a} and ${b} is ${a + b}`;
}

这是解释。

const sum =          Create a variable named `sum`.
(a = 1,b = 2) => {  Create an arrow function,with variables `a` and `b`,with defaults of 1 and 2 respectively.
return `             Return a string. In addition to " and ',a backtick will create a string,but with benefits!
${a}                 Interpolate the variable `a` into the string.
${b}                 Interpolate the variable `b` into the string.
${a + b}             Interpolate the expression of `a + b`.
`;                   End the string.

这是一个没有插值的代码示例。

const sum = (a = 1,b = 2) => {
    return 'The sum of ' + a + ' and ' + b + ' is ' + (a + b);
}