如何比较/匹配/替换javascript（regex）字符串与另一个忽略字符串顺序的字符串

Question

说我有一个字符串var str = "this is the string";

我想将其与此字符串var str2 = "string is the";进行比较

并且我希望它使用javascript和regex返回真实或匹配的字符串

Answer 1

根据您的解释，我创建了一个您需要的示例。在此代码示例中，我创建了一个函数，该函数将接受两个字符串，它们将被任何非单词字符分割，然后进行比较，而与字符串中的单词顺序无关。如果字符串相同，则不考虑单词顺序而包含相同的单词，它将返回true。

let string1 = "this is the string";
let string2 = "string is the this";

function findMatch( string1, string2 ) {
	//split by any non-word character, anything that is not
        //a-z, A-Z, 0-9 ( including the _ character )
	let splitPattern = /\W/;
	let split1 = string1.split( splitPattern );
        let split2 = string2.split( splitPattern );
	
    //traverse string1 array 
	for ( let i = 0; i < split1.length; i++ ) {
           let checkForMatch = false;
          //traverse string2 array
  	  for( let j = 0; j < split2.length; j++ ) {
    	    if ( split1[ i ] === split2[ j ] ) {
              checkForMatch = true;
              break;
            }
          }//inner for
    
    //if match not found in one itteration, strings do not
    //match and false should be returned
    if ( !checkForMatch ) {
    	return false;
    }
  }//outer for
  
  //else it matches so return true
   return true;
 
}//end findMatch

console.log( findMatch( string1, string2 ) );

希望这对您有所帮助。

编辑：否则，如果只想检查string1中是否存在string2，则可以在for循环中切换两个具有拆分结果的数组。