Javascript 根据空格拆分字符串并在 angular2 中读取
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Split string based on spaces and read that in angular2
提问by Abhinav Mishra
I am creating a pipe in angular2 where I want to split the string on white spaces and later on read it as an array.
我正在 angular2 中创建一个管道，我想在空格上拆分字符串，然后将其作为数组读取。
let stringToSplit = "abc def ghi";
StringToSplit.split(" ");
console.log(stringToSplit[0]);
When I log this, I always get "a" as output. Where I am going wrong?
当我记录这个时，我总是得到“a”作为输出。我哪里出错了？
回答by Radu Cojocari
Made a few changes:
做了一些改动：
let stringToSplit = "abc def ghi";
let x = stringToSplit.split(" ");
console.log(x[0]);
let stringToSplit = "abc def ghi";
let x = stringToSplit.split(" ");
console.log(x[0]);
The split method returns an array. Instead of using its result, you are getting the first element of the original string.
该分割方法返回一个数组。您不是使用其结果，而是获取原始字符串的第一个元素。
回答by curveball
let stringToSplit = "abc def ghi";
StringToSplit.split(" ");
console.log(stringToSplit[0]);
First, stringToSplitand StringToSplitare not the same. JS is case sensitive. Also you dont save result of StringToSplit.split(" ")anywhere and then you just output the first character of the string stringToSplitwhich is a. You could do like this:
第一，stringToSplit和StringToSplit不一样。JS 区分大小写。您也不会在StringToSplit.split(" ")任何地方保存结果，然后您只需输出字符串的第一个字符stringToSplit，即a. 你可以这样做：
let stringToSplit = "abc def ghi";
console.log(stringToSplit.split(" ")[0]); // stringToSplit.split(" ") returns array and then we take the first element of the array with [0]PS. also it is more about JavaScript than TypeScript or Angular.
附注。与 TypeScript 或 Angular 相比，它更多地是关于 JavaScript 的。
