我刚刚开始学习如何使用javascript,我的代码有一些问题。我们被要求制作一款绞刑游戏,我已经开发了必要的代码,使"正确"字母和"错误"字母循环发挥作用。然而,我需要我的代码来显示星号符号,而不是字母进入的盒子。我还需要它在用户猜对单词时向他们表示祝贺。我认为最简单的方法就是让它"提醒"用户。这部分不是必需的,但我也想知道如何将"刽子手"图像添加到代码。因此,假设用户猜错了一个字母,它就会根据图像构建刽子手。
我知道我要求很多,但是星号部分而不是方框和警告是我真正想要的。任何帮助都会很感激。
这是我的html代码与我的javascript代码
<html>
<head>
<title>HangmanProgram</title>
</head>
<script src="functions.js"></script>
<body>
<H1><bold><center> Hangman Program</h1>
<h3> The Hangman Game.
<br>
Click Start Game button. Type a letter in the "Guess" box and then click "Guess".
<br>
Click Reset button to play again.
<br>
<br>
<Form name = "hangmanForm">
<input type="button" value="Start Game" onclick="getword()"><br>
<!-- Hidden field for storing answer -->
<input type="hidden" name="answer" value=""/>
<input type="button" value="Guess" onclick="formCheck()">
<input name = "ltr" type="text" size = "1"><br>
<br>The Word is:
<input name = "letterone" type="text" size = "1">
<input name = "lettertwo" type="text" size = "1">
<input name = "letterthree" type="text" size = "1">
<input name = "letterfour" type="text" size = "1">
<BR>
<BR>
Wrong Letters<input name = "wrongletters" type="text" size = "24">
<BR>
<BR>
<input type="reset" value="Reset">
</form>
</head>
</body>
</html>
是我的javascript代码
// Get a random number
function get_random()
{
document.hangmanform.ltr.focus();
var ranword= Math.floor(Math.random()*11);
return ranword;
}
// Fetch the possible words using random number and array of choices
function getword()
{
var userguess=get_random();
var words =new Array(11);
words[0]="note";
words[1]="duck";
words[2]="cake";
words[3]="lake";
words[4]="stop";
words[5]="know";
words[6]="dogs";
words[7]="play";
words[8]="fair";
words[9]="sexy";
words[10]="love";
var answer = words[userguess];
// Set hidden field to answer.
hangmanform.answer.value = answer;
}
function formCheck()
{
// Read answer and decide if guess is in the string.
var answer = hangmanform.answer.value;
var vposition = answer.indexOf(hangmanform.ltr.value);
// If it is not the word, add to wrong letters box.
if (vposition == -1) {
hangmanform.wrongletters.value = hangmanform.ltr.value + " " + hangmanform.wrongletters.value;
}
else {
// Guess in string
switch (vposition) {
case 0:
hangmanform.letterone.value = answer.substring(0,1);
break;
case 1:
hangmanform.lettertwo.value = answer.substring(1,2);
break;
case 2:
hangmanform.letterthree.value = answer.substring(2,3);
break;
case 3:
hangmanform.letterfour.value = answer.substring(3,4);
}
}
// Set form guess box to empty string NOT SPACE
hangmanform.ltr.value ="";
hangmanform.ltr.focus();
}
JavaScript区分大小写。因此,name
, Name
, NAME
被认为是不同的标识符,可以同时用于不同的值。
在这种情况下,这意味着脚本中对hangmanform
(小写)的每个引用都应该是hangmanForm
(camelCase),以匹配<form name="hangmanForm">
使用的大小写。
// ...
function formCheck()
{
// Read answer and decide if guess is in the string.
var answer = hangmanForm.answer.value;
var vposition = answer.indexOf(hangmanForm.ltr.value);
// ...
另外,尽管自动全局变量正在成为标准,但依赖它们仍然不是一个好的实践,因为它们仍然可能与全局变量的其他用途相冲突。
// ...
function formCheck()
{
// Read answer and decide if guess is in the string.
var form = document.getElementsByName('hangmanForm')[0];
var answer = form.answer.value;
var vposition = answer.indexOf(form.ltr.value);
// ...
MDN: getElementsByName()
<span>
可以是<span id="letters">* * * *</span>
,可以用:
var letters = document.getElementById('letters'),
chars = letters.textContent.split(' ');
chars[2] = 'X'; // change the third * to the letter X
letters.textContent = chars.join(' ');