Question

我正在写一个函数，我输入一个字符串，函数检查它在数组中的位置。我已经写了代码，但我一直收到错误，控制台说“内容[i]未识别”，但我已经定义了数组。

function idxP1(contents,pattern) {

var contents = [ "Loughborough University offers degree programmes and 
world class research.", "An alternative University", "Yet another 
University"];

return contents.findIndex(word => word.toLowerCase().includes(pattern));


}
alert(idxP1(null, 'Uni'))

Answer 1

根据您的评论，您一定要使用findIndex：https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex

＆＃13;

function idxP1(contents, pattern) {
  var contents = ["Loughborough University offers degree programmes and world class research.", "An alternative University", "Yet another University"];
  return contents.findIndex(word => word.toLowerCase().includes(pattern.toLowerCase()));
}

console.log(idxP1(null, 'Uni'));

＆＃13;

注意：感谢@Andreas＆amp; @Keith的评论

修改：添加了可运行的代码段

为什么我被告知我的阵列没有被识别？

1 个答案: