Question

我正在创建一个刽子手游戏，我需要将选择的字母（在下面的代码中工作）与单词进行比较，然后将字母的下划线替换为字母，如果正确，我将如何进行这样做？

提前抱歉，我并不擅长这个和一个高中生。

＆＃13;

/* Hangman Game CSS File */
body
{
	background-color: #1B264F;
}

#main {
	background-color: #5386E4;
	height: 97vh; 
   	width: 95vw;
   	vertical-align: middle;

}
canvas {
    padding-left: 0;
    padding-right: 0;
    margin-left: auto;
    margin-right: auto;
    display: block;
    margin-top: auto;
    margin-bottom: auto;
}

＆＃13;

<!DOCTYPE html>
<html>
	<head>
		<title>Hangman by Lachlan Teale</title>	
		<meta name="description" content="Lachlan Teale's Hangman Game 2015">
		<meta name="keywords" content="hangman, lachlan, teale, Javascript">
		<meta charset="UTF-8">
		<meta name="author" content="Lachlan Teale">
		<link rel="stylesheet" type="text/css" href="style.css">
	</head>
	<body>
	<canvas id="main" width="1920" height="1080" style="border:1px solid #d3d3d3;"></canvas>

	<script type="text/javascript">

	//setting variables
		var canvas = document.getElementById('main');
     	var context = canvas.getContext('2d');
      	var underscore = "";
      	var letter;
      	var complete = false;

	//list of words
		var wordList = ["apple", "peach", "pear", "mango", "banana", "paper", "pens", "laptop", "desk", "chair", "star", "sky", "moon", "sun", "planets"];

	//picking a random word from the list
		var word = wordList[Math.floor(Math.random() * wordList.length)];

	//print out the underscores for the number of letters
		for (i = 0; i < word.length; i++)	{
			var underscore = underscore + "_ ";
		}

		context.font = '50pt Calibri';
      	context.textAlign = 'center';
      	context.fillStyle = '#E2E2E3';
      	context.fillText(underscore, canvas.width * 0.5, canvas.height * 0.70);

    //correct letter text
      	context.font = 'bold 30pt Calibri';
      	context.textAlign = 'center';
      	context.fillStyle = '#E2E2E3';
      	context.text
      	context.fillText("Correct Letters", canvas.width * 0.08, canvas.height * 0.05);

    //Wrong Letter text
      	context.font = 'bold 30pt Calibri';
      	context.textAlign = 'center';
      	context.fillStyle = '#E2E2E3';
      	context.text
      	context.fillText("Wrong Letters", canvas.width - (canvas.width * 0.08), canvas.height * 0.05);

	//checking which button is pressed
		window.addEventListener('keydown', function(event) {
			if ( event.keyCode >= 65 && event.keyCode <= 90 ) {
    			context.clearRect(0, canvas.height * 0.80, canvas.width, canvas.height);  
        		letter = String.fromCharCode( event.keyCode ).toLowerCase();
        		context.font = '50pt Calibri';
      			context.textAlign = 'center';
      			context.fillStyle = '#E2E2E3';
      			context.fillText(letter, canvas.width * 0.5, canvas.height * 0.85);
      		}
		});

		document.addEventListener('keydown', function(event) {                     
    		if ( event.keyCode == 8 ) {											   
    			context.clearRect(0, canvas.height * 0.80, canvas.width, canvas.height); 
    		}
    	});

      	document.addEventListener('keydown', function(event) {                     
    		if( event.keyCode == 13 ) {
    			alert(letter + " and enter was pressed");
    		}
    	});
		
		</script>
	</body>
</html>

＆＃13;

Answer 1

使用indexOf检测字母是否存在：

word.indexOf(letter);

使用替换替换_：

underscore = underscore.replace(/_/g, function(m, index) {
    return word[index] === letter ? letter : m;
});

http://jsfiddle.net/2y4so8t0/

Answer 2

将方法match（）与正则表达式一起使用以检查字符串中匹配的单词

var str = "The rain in SPAIN stays mainly in the plain"; 
var res = str.match(/ain/g);

如何在javascript中将字母与我的单词进行比较？

2 个答案: