<script type="text/javascript">var counts=10;var counting;function countDown(){ var test = document.getElementById("test"); test.disabled = true; counting = setInterval("countOne();",1000)}function countOne(){ var test = document.getElementById("test"); test.firstChild.nodeValue = "我同意"+counts; if(counts-- == "0"){ test.firstChild.nodeValue = "我同意"; test.disabled = false; clearInterval(counting); }}</script>
<button id="test">我同意</button>
<button onclick="m()">开始计时</button>上面代码中,功能是点"开始计时" ,会有10秒过后才能使用"我同意"这个按钮。运行程序,第一次点"开始计时",成功等待10秒后,就可以使用"我同意"这个按钮。第二次点"开始计时", 却出现了问题,秒针变成了负数的,不知道怎么回事,请大虾讲解! 谢谢...
请问你这个m()是什么东西啊
<head>
<title></title>
</head>
<body>
<script type="text/javascript">
var counts;
var counting;
function countDown() {
counts = 10;
var test = document.getElementById("test");
test.disabled = true;
counting = setInterval("countOne();", 1000);
}
function countOne() {
var test = document.getElementById("test");
test.firstChild.nodeValue = "我同意" + counts;
if (counts-- == "0") {
test.firstChild.nodeValue = "我同意";
test.disabled = false;
clearInterval(counting);
} }
</script>
<button id="test">我同意</button>
<button onclick="countDown()">开始计时</button>
</body>
</html>
<button id="test">我同意</button>
<button onclick="countDown()">开始计时</button>
第二次点"开始计时", 却出现了问题,秒针变成了负数的,不知道怎么回事,
<script type="text/javascript">
var counts = 10;
var counting;
function countDown() {
var test = document.getElementById("test");
test.disabled = true;
counting = setInterval("countOne();
", 1000)
}
function countOne() {
var test = document.getElementById("test");
test.firstChild.nodeValue = "我同意" + counts;
if (counts--=="0") {
test.firstChild.nodeValue = "我同意";
test.disabled = false;
clearInterval(counting);
}
}
</script>
<button id="test">
我同意
</button>
<button onclick="countDown()">
开始计时
</button>第二次点"开始计时", 却出现了问题,秒针变成了负数的,不知道怎么回事,
每次点击的时候,应该是重新 赋值counts. 代码用var counts = 10; 不知道对不对
<head>
<title></title>
</head>
<body>
<script type="text/javascript">
var counts;
var counting;
function countDown() {
counts = 10;
var test = document.getElementById("test");
test.disabled = true;
counting = setInterval("countOne();", 1000);
}
function countOne() {
var test = document.getElementById("test");
test.firstChild.nodeValue = "我同意" + counts;
if (counts-- == "0") {
test.firstChild.nodeValue = "我同意";
test.disabled = false;
clearInterval(counting);
} }
</script>
<button id="test">我同意</button>
<button onclick="countDown()">开始计时</button>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<script type="text/javascript">
var counts;
var counting;
function countDown() {
if(counting){
clearInterval(counting);
}
counts = 10;
var test = document.getElementById("test");
test.disabled = true;
counting = setInterval("countOne();", 1000);
}
function countOne() {
var test = document.getElementById("test");
test.firstChild.nodeValue = "我同意" + counts;
if (counts-- == "0") {
test.firstChild.nodeValue = "我同意";
test.disabled = false;
clearInterval(counting);
} }
</script>
<button id="test">我同意</button>
<button onclick="countDown()">开始计时</button>
</body>
</html>
<script type="text/javascript">
var counts=10;
var counting;
function countDown(){
counts=10;//重新给counts赋值
var test = document.getElementById("test");
test.disabled = true;
counting = setInterval("countOne();",1000)
}
function countOne(){
var test = document.getElementById("test");
test.firstChild.nodeValue = "我同意"+counts;
if(counts-- == "0"){
test.firstChild.nodeValue = "我同意";
test.disabled = false;
clearInterval(counting);
}
}
</script>
<button id="test">我同意</button>
<button onclick="countDown()">开始计时</button>
<script type="text/javascript">
var counts=10;
var counting;
function countDown(){
var test = document.getElementById("test");
test.disabled = true;
counting = setInterval("countOne();",1000)
}
function countOne(){
var test = document.getElementById("test");
test.firstChild.nodeValue = "我同意"+counts;
if(counts-- == "0"){
test.firstChild.nodeValue = "我同意";
test.disabled = false;
clearInterval(counting);
//这里:当counts-- ==0 时 需
counts=0;//赋值 }
}
</script>