_javascript techniques for matching two strings in JavaScript

Work encountered a problem, two string matching, required: Each string contains a maximum of *,? can be infinitely many

* Represents a string of any length, while? Represents a character

The request can prompt two conflicts

Copy Code code as follows:

<input type= "text" id= "str1" ><br>
<input type= "text" id= "str2" ><br>
<input type= "button" onclick= "Checkmarchx ()" value= "CHECK" >

Implement the code in JavaScript as follows:

function Checkmarchx () {var str1 = document.getElementById (' str1 '). Value;
	var str2 = document.getElementById (' str2 '). Value;
	var str1xposition = str1.indexof (' * ');
	var str2xposition = str2.indexof (' * '); if (str1xposition!=-1 && str2xposition!=-1)//both contain * {var position = Str1xposition>str2xposition?
			Str2xposition:str1xposition;//success if (position!=0) {var patbeforeStr1 = str1.substring (0,position);
			var patbeforeStr2 = str2.substring (0,position);
				if (CHECKMARCHQ (PATBEFORESTR1,PATBEFORESTR2)) {//alert (str1+ ' and ' +str2+ ' the first half of the conflict ");
				Then the second part is tested var str1xbackposition = str1.length-str1xposition-1;
				var str2xbackposition = str2.length-str2xposition-1;
				var backposition = str1xbackposition>str2xbackposition?str2xbackposition:str1xbackposition;
				if (backposition==0) {alert (str1+ ' and ' +str2+ ' conflict ');
					else {var patbackStr1 = str1.substring (str1.length-backposition,str1.length); var patbackStr2 = Str2.substring (Str2.length-backposition,str2.length);
					if (CHECKMARCHQ (PATBACKSTR1,PATBACKSTR2)) {alert (str1+ ' and ' +str2+ ' conflict);
			}} else {//alert (str1+ ' and ' +str2+ ' first half conflict);
			var str1xbackposition = str1.length-str1xposition-1;
			var str2xbackposition = str2.length-str2xposition-1;
			var backposition = str1xbackposition>str2xbackposition?str2xbackposition:str1xbackposition;
			if (backposition==0) {alert (str1+ ' and ' +str2+ ' conflict ');
				else {var patbackStr1 = str1.substring (str1.length-backposition,str1.length);
				var patbackStr2 = str2.substring (str2.length-backposition,str2.length);
				if (CHECKMARCHQ (PATBACKSTR1,PATBACKSTR2)) {alert (str1+ ' and ' +str2+ ' conflict); else if (str1xposition==-1 && str2xposition!=-1) | | (Str1xposition!=-1 && str2xposition==-1))
		There is and only one string containing * {var Strx = str1xposition==-1?str2:str1;//containing * string var Strnox = str1xposition==-1?str1:str2;//string without * if (Strx.length-1<strnox.length) {var position = strx.indexof (' * ');
				if (position==0) {//alert (str1+ ' and ' +str2+ "conflict");
				var backposition = strx.length-position-1;
				if (backposition==0) {alert (str1+ ' and ' +str2+ ' conflict ');
					else {var patbackStr1 = str1.substring (str1.length-backposition,str1.length);
					var patbackStr2 = str2.substring (str2.length-backposition,str2.length);
					if (CHECKMARCHQ (PATBACKSTR1,PATBACKSTR2)) {alert (str1+ ' and ' +str2+ ' conflict);
				}} else {var patbeforeStr1 = str1.substring (0,position);
				var patbeforeStr2 = str2.substring (0,position);
					if (CHECKMARCHQ (PATBEFORESTR1,PATBEFORESTR2)) {//alert (str1+ ' and ' +str2+ ' the first half of the conflict ");
					var backposition = strx.length-position-1;
					if (backposition==0) {alert (str1+ ' and ' +str2+ ' conflict ');
						else {var patbackStr1 = str1.substring (str1.length-backposition,str1.length);
var patbackStr2 = str2.substring (str2.length-backposition,str2.length);						if (CHECKMARCHQ (PATBACKSTR1,PATBACKSTR2)) {alert (str1+ ' and ' +str2+ ' conflict);
		}}}}} else {if (CHECKMARCHQ (STR1,STR2)) {alert (str1+ ' conflict ' with ' +str2+ ');
	}} function Checkmarchq (STR1,STR2) {var flagque = false; if (str1.length==str2.length) {//length is the same as possible conflict for (Var i=0; I<str1.length i++) {if (str1.substr) i,1 '? '!=
			mp;& str2.substr (i,1)!= '? ')
				{if (Str1.substr (i,1)!=str2.substr (i,1)) {Flagque = false;//indicates no conflict break;
else {Flagque = true;//indicates conflict}}} return flagque;
 }

where * at least one character, the above program does not validate the legality of the input

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