How to determine the first time a page is entered with javascript

bonbonbon · Post time: 2020-2-11 18:30:02

How to determine the first time a page is entered using javascript,
IsPostBack-like effect

若水淡淡 · Post time: 2020-4-30 12:45:01

Simple is to read cookies

weh007 · Post time: 2020-4-30 13:45:01

Set a public variable, add one every time it loads, and check the value

aresaga · Post time: 2020-4-30 19:15:01

<html>
<input type = "hidden" id = "flag" value = "0" />
<script language = javascript>
function test ()
{
  var flag = document.getElementById ("flag");
  if (flag.value == "0")
  {
    // first time
    alert ("first time");
    flag.value = "1";
  }
  else
  {
    alert ("not first time");

  }
}
</ script>
<body onload = "test ();">
</ html>

若水淡淡 · Post time: 2020-4-30 19:30:01

Also determine whether document.referrer is yourself

bonbonbon · Post time: 2020-4-30 21:15:01

toweh007
How to set a public variable? Thank you

aresaga · Post time: 2020-4-30 22:00:02

If there is a jump, use document.cookies

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