为什么不能运行出来
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>获取年份</title>
<script type="text/javascript">
var mydata = new Data();
var myyear = mydata.getFullYear();
document.write("年份:"+myyear);
</script>
</head>
<body >
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>获取年份</title>
<script type="text/javascript">
var mydata = new Data();
var myyear = mydata.getFullYear();
document.write("年份:"+myyear);
</script>
</head>
<body >
</body>
</html>
2020-07-11
var zcj = 0;
for (i = 0; i < (scoreStr.split(";")).length; i++) {
zcj += parseInt(((scoreStr.split(";"))[i]).split(":")[1]);
}
for (i = 0; i < (scoreStr.split(";")).length; i++) {
zcj += parseInt(((scoreStr.split(";"))[i]).split(":")[1]);
}
var mystr="Hello World!"
document.write(mystr.substring(mystr.indexOf("World!")) + "<br />");
document.write(mystr.substring(mystr.indexOf("Hello"),mystr.indexOf(" ",mystr.indexOf("Hello")+1)));
document.write(mystr.substring(mystr.indexOf("World!")) + "<br />");
document.write(mystr.substring(mystr.indexOf("Hello"),mystr.indexOf(" ",mystr.indexOf("Hello")+1)));
2020-07-10
document.write(mystr.indexOf("o",mystr.indexOf("o")+1));
2020-07-10
时分秒小于10,补零思路
var h=time.getHours();
var m=time.getMinutes();
var s=time.getSeconds();
if(h<10){
h="0"+h;
}
if(m<10){
m="0"+m;
}
if(s<10){
s="0"+s;
}
var h=time.getHours();
var m=time.getMinutes();
var s=time.getSeconds();
if(h<10){
h="0"+h;
}
if(m<10){
m="0"+m;
}
if(s<10){
s="0"+s;
}
2020-07-09
for (var i=0; i<Lists.length;i++)
{
var text= Lists[i].getAttribute("title");
if(text=="")
{
Lists[i].setAttribute("title","WED前端技术");
document.write(Lists[i].getAttribute("title")+"<br>");
}else{
document.write(text +"<br>");
}}
{
var text= Lists[i].getAttribute("title");
if(text=="")
{
Lists[i].setAttribute("title","WED前端技术");
document.write(Lists[i].getAttribute("title")+"<br>");
}else{
document.write(text +"<br>");
}}
2020-07-09
var otest = document.getElementById("test");
var node=otest.lastChild;
var newnode=document.createElement("li");
newnode.innerHTML="php";
otest.insertBefore(newnode,node);
var node=otest.lastChild;
var newnode=document.createElement("li");
newnode.innerHTML="php";
otest.insertBefore(newnode,node);
2020-06-29