Question

在javascript中使用setInterval时，日期不会改变。为什么日期不会每秒都改变？

var myVar=setInterval(myTimer(),1000);
function myTimer() {
  var d = new Date();
  document.write(d.toLocaleString());
}

enter image description here

Answer 1

您不应在myTimer中调用setInterval功能。您应该将引用传递给setInteval

var myVar=setInterval(myTimer,1000);//corrected line
function myTimer() {
  var d = new Date();
  document.write(d.toLocaleString());
}

Answer 2

我认为此解决方案更好，请查看此示例Timer Example

//When the document is loaded
document.addEventListener("load", myTimer);
//subsequent calls
setInterval(myTimer, 1000);
function myTimer(){
  var d = new Date();
  document.getElementById("timer").innerHTML = d.toLocaleString();
}

Answer 3

试试这个：

<html>
<body>

<p id="hh"></p>

<script>
  var myVar=setInterval(myTimer(),1000);
  function myTimer() {
    var d = new Date();
    document.getElementById("hh").innerHTML = d.toLocaleTimeString();
    //document.getElementById("hh").innerHTML = d.toLocaleTimeString();
  }
</script>

</body>
</html>

在javascript中使用setInterval时，日期不会更改

3 个答案: