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정수 변수에 5를 더하려면 javascript가 필요하지만 변수를 문자열로 처리하므로 변수를 쓰고 끝에 5를 더합니다. "문자열"의. 대신 어떻게해야 수학을 할 수 있습니까?JS가 두 문자열을 합치는 대신 수학을 수행하는 방법
var dots = 5
function increase(){
dots = dots+5;
}
출력은 :
는어떻게 출력 (10)에 강제 할 수 55?
내 스크립트에서 어딘가에 오류가있을 수 있습니까?
<html>
<head>
<title>Counting Game</title>
<style type="text/css">
.dot {
position: absolute;
}
#control {
position: absolute;
width: 220px;
height: 90px;
margin-top: -102px;
margin-left: -222px;
left: 100%;
top: 100%;
text-align: center;
vertical-align: middle;
border: 1px dotted #000;
padding-top: 10px;
background-color: transparent;
}
#gameover h1 {
font-variant: small-caps;
}
#gameover {
text-align: center;
visibility: hidden;
}
#txt {
text-align: center;
}
body {
background-color: #6FF;
}
#intro, #gameover {
height: 300px;
width: 250px;
margin-top: -150px;
margin-left: -125px;
position: absolute;
left: 50%;
top: 50%;
}
#dots {
position: absolute;
left: 0px;
top: 0px;
}
</style>
<script type="text/javascript">
var num;
var digits;
var size;
var bsize;
var bsizew;
var bsizeh;
var lvlv;
var hearts;
var t;
var answer = false;
var lvl=1;
var oldlvl=1;
var btn = 2;
var dots = 5;
var arrx = [];
var arry = [];
var lifestf = true;
var timertf = true;
var auto = true;
var level = 1;
var life = 4;
var resetv = false;
function docload() {
document.getElementById("txt").focus();
}
function createdots() {
answer = false;
document.getElementById("txt").value = ""
document.getElementById("txt").focus()
document.getElementById("txt").style.color = "#000000"
document.getElementById("control").style.backgroundColor = "#6FF"
document.body.style.backgroundColor = "#6FF"
num = Math.floor(Math.random() * dots) + 1;
digits = num.toString().length
bsize = Math.min(document.body.clientWidth, document.body.clientHeight);
bsizew = document.body.clientWidth;
bsizeh = document.body.clientHeight;
if ([[bsizeh*bsizew]-[220*90]] > num*num*25000) {size=100}
else if ([[bsizeh*bsizew]-[220*90]] > num*num*2500) {size=50}
else if ([[bsizeh*bsizew]-[220*90]] > num*num*25*25) {size=25}
else {size=10}
function createDot(x, y) {
var elem = document.createElement("div");
elem.setAttribute("class", "dot");
elem.setAttribute("style", "left:"+ x+"px;top:"+y+"px;"+"width: "+size+"px;"+"height: "+size+"px;"+"background-image: url(dot"+size+".png);");
document.getElementById("dots").appendChild(elem);
btn = 1
return elem;
}
function anotherDot() {
var x = Math.floor(Math.random() * (bsizew-size));
var y = Math.floor(Math.random() * (bsizeh-size));
ok = true;
for (var i in arrx) {
if (arrx[i] <= x + size && arrx[i] >= x - size) {
ok = false;
}
}
for (var i = 0; i < arry.length; i++) {
if (arry[i] <= y + size && arry[i] >= y - size) {
ok = false;
}
}
if (x > bsizew-size-220 && y > bsizeh-size-90) {ok = false;}
if (ok) {
arrx.push(x);
arry.push(y);
createDot(x, y);
}
!ok && anotherDot();
}
for (var i = 0; i < num; i++) {
anotherDot();
document.getElementById("max").innerHTML="Max: "+dots;
}
}
function resetg() {
document.getElementById("txt").style.color = "#000000"
document.getElementById("control").style.backgroundColor = "#6FF"
document.body.style.backgroundColor = "#6FF"
document.getElementById("gameover").style.visibility = "hidden";
document.getElementById("intro").style.visibility = "visible";
document.getElementById("control").style.visibility = "visible";
document.getElementById("life").innerHTML='<label><input id="lifecheck" type="checkbox" checked="true">Lives</label>'
document.getElementById("level").innerHTML='<label><input id="autocheck" type="checkbox" checked="true">Auto</label>'
document.getElementById("max").innerHTML=''
document.getElementById("timer").innerHTML='<label><input id="timercheck" type="checkbox" checked="true">Timer</label>'
lvl=1
btn = 2;
dots = 5;
arrx = [];
arry = [];
lifestf = true;
timertf = true;
auto = true;
level = 1;
life = 4;
resetv = false;
lvlv = '';
document.getElementById("txt").value = "5"
document.getElementById("txt").focus()
}
function checkanswer() {
answer = true;
if (document.getElementById("txt").value == arrx.length) {
document.getElementById("txt").value = "CORRECT!"
document.getElementById("txt").style.color = "#00DD00"
document.getElementById("control").style.backgroundColor = "#00FF00"
document.body.style.backgroundColor = "#00FF00"
btn = 0
lvl++;
}
else if (document.getElementById("txt").value != arrx.length) {
document.getElementById("txt").value = "Correct Answer: " + arrx.length
document.getElementById("txt").style.color = "#DD0000"
document.getElementById("control").style.backgroundColor = "#C00"
document.body.style.backgroundColor = "#C00"
if (lifetf==true){
hearts = "";
for(i=0;i<life;i++){
hearts += "♥ ";
}
document.getElementById("life").innerHTML = hearts;
life--;
}
btn = 0
lvl > 1 && lvl--;
if (lvl == oldlvl + 5) {
oldlvl = lvl;
dots = dots+5;
}
else if (lvl < oldlvl) {
oldlvl = lvl - 5;
dots = dots+5;
}
if (life<0){
lvlv="wtfiswrongwithyou"
}
}
}
function submitenter() {
var keycode = window.event.keyCode;
if (keycode == 13) {
!resetv && btnclick();
resetv && resetg();
}
if (keycode < 47 || keycode > 58 || answer) {
return false;
}
}
function quickanswer() {
if (auto == true && document.getElementById("txt").value.length == digits) {
document.getElementById("dots").innerHTML = ""
arrx = [];
arry = [];
createdots()
}
}
function btnclick() {
if (btn == 1) {
checkanswer()
}
else if (btn == 2) {
lifetf = document.getElementById("lifecheck").checked;
timertf = document.getElementById("timercheck").checked;
auto = document.getElementById("autocheck").checked;
dots = document.getElementById("txt").value;
document.getElementById("life").innerHTML="♥ ♥ ♥ ♥ ♥ "
document.getElementById("level").innerHTML=lvl
document.getElementById("max").innerHTML=dots
document.getElementById("intro").style.visibility= "hidden"
btn = 0;
document.getElementById("txt").value = ""
document.getElementById("txt").focus()
btnclick();
}
else if (lvlv != "wtfiswrongwithyou") {
document.getElementById("dots").innerHTML = ""
arrx = [];
arry = [];
createdots();
if (timertf==true) {
clearTimeout(t)
timer(2, 0)
}
document.getElementById("level").innerHTML=lvl
}
else {
document.getElementById("dots").innerHTML = ""
arrx = [];
arry = [];
document.getElementById("txt").value = ""
document.getElementById("txt").focus()
document.getElementById("txt").style.color = "#C00"
document.getElementById("control").style.backgroundColor = "#C00"
document.body.style.backgroundColor = "#C00"
document.getElementById("gameover").style.visibility = "visible";
document.getElementById("intro").style.visibility = "hidden";
document.getElementById("control").style.visibility = "hidden";
resetv=true;
}
}
function timer(s,ms) {
if (lvlv != "wtfiswrongwithyou") {
milisec = ms
seconds = s
function display() {
if (milisec <= 0) {
milisec = 9
seconds -= 1
}
if (seconds <= -1) {
milisec = 0
seconds += 1
} else
milisec -= 1
document.getElementById("timer").innerHTML = "Time: " + seconds + "." + milisec
if (seconds != 0 || milisec != 0) {
t = setTimeout(display, 100)
}
if (seconds == 0 && milisec == 0) {
btnclick()
}
}
display()
} else {
document.getElementById("timer").innerHTML = ""
}
}
</script>
</head>
<body onLoad="docload()" onKeyPress="return submitenter()" >
<div id="dots"></div>
<div id="gameover"><h1>Game Over</h1>Would you like to play again?<br><br><br><input type="button" value="OK" onClick="resetg()"></div>
<div id="intro">Count all the dots that appear on screen as fast as possible and enter the number below. The point of this game is not to count each individual dot, but rather to immediately know exactly how many dots are apparent.<br>
<br>
<br>
Please select what the maximum number of dots should appear when you begin:</div>
<div id="control">
<input id="txt" type="text" value="5"/>
<input type="button" onClick="btnclick()" value="OK"/><br>
<center><table width="200">
<tr>
<td align="left" valign="middle"><span id="life"><label><input id="lifecheck" type="checkbox" checked="true">Lives</label></span></td>
<td align="right" valign="middle"><span id="timer"><label><input id="timercheck" type="checkbox" checked="true">Timer</label></span></td>
</tr>
<tr>
<td align="left" valign="middle"><span id="level"><label><input id="autocheck" type="checkbox" checked="true">Auto</label></span></td>
<td align="right" valign="middle"><span id="max"></span></td>
</tr>
</table></center>
</div>
</body>
</html>
이 특정 예에 출력 자바 잘못 두 숫자를 추가] 10. – deceze
중복 가능성 (http://stackoverflow.com/questions/3638074/javascript-adding-two-numbers-incorrectly); [해당 질문에 대한 내 대답] 참조 (http://stackoverflow.com/questions/3638074/javascript-adding-two-numbers-incorrectly/4600744#4600744) – Phrogz
덤핑으로 도움을 받고자하는 사람에게 과도한 부담을주었습니다 그것을 줄이려는 노력을하지 않고도 모든 코드를 사용할 수 있습니다. 자체 테스트 ...'# control'에 대한 CSS 속성은 문제에 어떤 차이가 있습니까? 그렇지 않다면 삭제하고 우리에게 보여주지 마십시오. 문제를 재현하는 데 필요한 최소한의 테스트 사례가있을 때까지 코드를 계속 줄입니다. 대부분 그렇게하면 _you_가 문제를 발견하고 ** 과정에서 배울 수 있습니다. _ 당신이 직접 해결하지 못한다면, 당신은 간단한 예제로 빠른 도움을 얻을 것입니다. _ – Phrogz