javascript - chop 具有多个字符的字符串而不 chop 单词

Question

我想 chop 一个具有字符限制的字符串，并且最后一个字符应该是空格的条件(这样我就没有被 chop 的单词)

示例:

var sentence = "The string that I want to truncate!";
sentence.methodToTruncate(14); // 14 is the limit of max characters 
console.log("Truncated result : " + sentence); // Truncated result : The string 

Answer 1

您可以使用下面的 chop 单行:

const sentence = "The string that I want to truncate!";

const truncate = (str, len) => str.substring(0, (str + ' ').lastIndexOf(' ', len));

console.log(truncate(sentence, 14));