获取字符串的第一个单词 [英] Get first word of string

问题描述

好的，这是我的代码，其中包含我尝试执行的操作的详细信息:

Okay, here is my code with details of what I have tried to do:

var str = "Hello m|sss sss|mmm ss";
//Now I separate them by "|"
var str1 = str.split("|");

//Now I want to get the first word of every split-ed sting parts:

for (var i = 0; i < codelines.length; i++) {
  //What to do here to get the first word of every spilt
}

那我应该怎么做呢?:

我想得到的是:

• firstword[0] 将给出 "Hello"

firstword[1] 将给出 "sss"

推荐答案

再次用空格分割:

var firstWords = [];
for (var i=0;i<codelines.length;i++)
{
  var words = codelines[i].split(" ");
  firstWords.push(words[0]);
}

或者使用String.prototype.substr()(可能更快):

Or use String.prototype.substr() (probably faster):

var firstWords = [];
for (var i=0;i<codelines.length;i++)
{
  var codeLine = codelines[i];
  var firstWord = codeLine.substr(0, codeLine.indexOf(" "));
  firstWords.push(firstWord);
}

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