我正在尝试随机化一个字符串,具体取决于他们有多少玩家,并为每个玩家分配他们的工作/角色。在Chrome控制台中,我收到错误, “Uncaught ReferranceError:al未定义。”我不知道问题是什么,变量是在使用它之前定义的(在第一个按钮中定义,在第二个按钮中使用)。 我在文档中有一个警告,证明变量已定义,当按下按钮时,它在参数al中说明。 HTML:
<input maxlength="1" id="input"> <button id="gp" onclick="gp()">Start!</button>
<br/>
<br/>
<button id="DJ" onclick="DJ(al, rl);BlankDisplay(al, rl)">Display Your Job!</button>
<br/>
<span id="DS">1) Input Amount Of Players. 2)Click 'Display Your Job!'</span>
使用Javascript:
function gp(){
players = document.getElementById("input").value;
if(isNaN(players)){
alert(players.toUpperCase() + "'s Players? Please Fix");
return;
}
if(players === " "){
alert("Please Define How Many People Are Playing!");
return;
}
if(players === ""){
alert("Please Define How Many People Are Playing!");
return;
}
if(players < 4){
alert("Sorry, You Need Atleast 4 Players To Play!");
return;
}
SA(players)
}
function SA(players){
var positions = ["Murderer", "Judge", "Innocent", "Innocent"]; //Pre-set positions
if(players == 5){
positions.push("Co-Judge");
}else if(players == 6){
positions.push("Innocent", "Co-Judge");
}else if(players == 7){
positions.push("Murderer-2!", "Innocent", "Co-Judge");
}
Randomize(players, positions)
}
function shuffle(o){
for(var j, x, i = o.length; i; j = Math.floor(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
return o;
}
function Randomize(players, positions){
var rl = shuffle(positions);
var al = positions.length;
confirm("You Have: " + al + " Players, Correct?");
alert(al + ". " + rl);
}
function DJ(al, rl){
var counter = 0;
var bd = 0;
for(var c = 0; c < al + 1; c++){
if(counter == 0){
document.getElementById("DS").innerHTML(rl[c]);
document.getElementById("BJ").innerHTML("Click To Clear!");
bd = 1;
}
}
}
function BlankDisplay(al, rl){
if(bd == 1){
document.getElementById("Click The Button Above To See Your Job!");
}
}
答案 0 :(得分:1)
你有两个函数,DJ和BlankDisplay(从不使用大写字母),它们都接受al和rl的参数,但第二个函数不使用al或rl。然后在这段代码中:<button id="DJ" onclick="DJ(al, rl)
你将变量al和rl传递给DJ的函数调用,但是除非你已经将var al和rl定义为window / global scope的属性,那么这些是未定义。
我猜你是否对变量和参数之间的区别感到困惑。所以我从那里开始。
答案 1 :(得分:1)
删除al
&amp;来自DJ参数的rl
。他们生活在全球范围内,应该可以访问al
&amp; rl
,无需通过DJ
按钮onclick
传递。
DJ
,如下所示:<button id="DJ" onclick="DJ(); BlankDisplay();">Display Your Job!</button>
。al
和rl
,如下所示:var al, rl;
。var
。所以:var rl = shuffle(positions); var al = positions.length;
应该成为:rl = shuffle(positions); al = positions.length;
。function DJ(al, rl){
更改为此function DJ(){
。function BlankDisplay(al, rl){
更改为此function BlankDisplay(){
。应该这样做。