比较字符串中的单词答案

【问题标题】：Compare words in strings比较字符串中的单词
【发布时间】：2016-06-10 14:53:27
【问题描述】：

我正在尝试比较字符串中的单词。这就是我想要做的：

var string1 = "Action, Adventure, Comedy";
var string2 = "Action Horror";

if (string1 have a word from string 2 == true)
{
    alert("found!");
}

我尝试过 match()，但在我的情况下，它会尝试查找“Action Horror”而不是“Action”和“Horror”字样。

【问题讨论】：

标签： javascript jquery compare match

【解决方案1】：

您可以使用 match() 和 reduce()

执行类似的操作

var string1 = "Action, Adventure, Comedy";
var string2 = "action Horror";

var strArr = string1.match(/\b\w+?\b/g)
  //getting all words from string one
  .map(function(v) {
    return v.toLowerCase();
  });
//converting strings to lower case for ignoring case

var res = string2.match(/\b\w+?\b/g)
  // getting words from second string
  .reduce(function(a, b) {
    return a || strArr.indexOf(b.toLowerCase()) != -1;
    //checking string in first word  array
  }, false);
  // also set initial value as false since no strings are matched now

console.log(res);

或者

var string1 = "Action, Adventure, Comedy";
var string2 = "action Horror";

var res = string2.match(/\b\w+?\b/g)
  // getting words from second string
  .reduce(function(a, b) {
    return a || new RegExp('\\b' + b + '\\b', 'i').test(string1);
    //checking string in first string
  }, false);
  // also set initial value as false since no strings are matched now

console.log(res);

参考：JavaScript/jQuery - How to check if a string contain specific words

【讨论】：

【解决方案2】：

String.split、String.indexOf 和 Array.foreach 函数的解决方案：

var string1 = "Action, Adventure, Comedy, Horror";
    var string2 = "Action Horror";

    var str1_arr = string1.split(', ');
    str1_arr.forEach(function (v) {
        if (string2.indexOf(v) !== -1) {
            console.log("string '"+ v +"'(from string1) was found in string2 in position " + string2.indexOf(v));
        }
    });

// the output:
string 'Action'(from string1) was found in string2 in position 0
string 'Horror'(from string1) was found in string2 in position 7

https://developer.mozilla.org/ru/docs/Web/JavaScript/Reference/Global_Objects/String/split https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/indexOf

【讨论】：

【解决方案3】：

声明两个集合：

    var Set set1,ser2;

将string1复制到set1，将string2复制到set2

（不知道该怎么做）。然后有：

var intersection = new Set([x for (x of set1) if (set2.has(x))]);

    if intersection.prototype.size>0

两个字符串（和集合）都有一些共同的词。

【讨论】：