如何使用 setInterval() 更改文本? [英] How can use the setInterval() to change the text?
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问题描述
我已经为此工作了一段时间.我正在尝试创建一个简单的倒计时计时器.我已经让 alert() 工作了,但不幸的是 textToChange 没有改变.我在下面复制了我的代码的副本.任何帮助将不胜感激!谢谢.
I've been working at this for quite some time now. I'm trying to create a simple timer that counts down. I've gotten the alert() to work, but unfortunately the textToChange does not change. I've reproduced a copy of my code below. Any help would be greatly appreciated! Thank you.
<script type="text/javascript">
var timeLeft = 0;
var changingTextElement;
var changingText = new Array();
var ctr = 0;
function timeMsg(thing)
{
var length = thing.inputbox.value*1000;
var t = setTimeout("alertMsg()",length);
timeLeft = length/1000;
initChangeText();
}
function alertMsg()
{
alert("Alert!");
}
function initChangeText(){
changingTextElement = document.getElementById("textToChange");
changingText[ctr] = changingTextElement.innerHTML;
ctr++;
while(timeLeft > 0){
changingText[ctr] = timeLeft;
timeLeft--;
ctr++;
}
ctr = 0;
setInterval("changingText()",1000);
}
function changingText() {
ctr++;
if(ctr >= changingText.length){
changingTextElement.innerHTML = 0;
}
else{
changingTextElement.innerHTML = changingText[ctr];
}
}
</script>
推荐答案
您正在使用 changedText
函数和 keepingText
数组 ...
You are using a changingText
function and a changingText
array ...
看到冲突了吗?
作为附加信息,
不要在setInterval
方法中使用字符串作为名称函数.直接引用方法
do not use strings as name functions in the setInterval
method. Use a reference to the method directly
setInterval(changingText, 1000);
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