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JS Timer Application

Source: Internet
Author: User
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  • Timer:(delay device)
    Used to specify that a program executes after a specific period of time.
  • setTimeout ():(version 1.0)

  • Format:
    [Timer Object name =] SetTimeout ("< expression >", ms)
    Function: Execute < expression > once.
    <script language= "JavaScript" >
    SetTimeout ("Confirm (' 123456 ')", 1000);
    </SCRIPT>
    <script language= "JavaScript" type= "Text/javascript" >
    function count () {
    SetTimeout ("alert (' three Seconds to ')", 3000)
    }
    </Script>
    <input type= "button" value= "timing Start" onclick= "Count ()" >
  • cleartimeout (): Termination timer

  • Format:
    Cleartimeout (Timer object name)
  • setinterval ():(Version 1.2)

  • Format:
    [Timer Object name =] SetInterval ("< expression >", ms)
    Function: Repeat execution < expression, until window, frame is closed or execution clearinterval.
  • clearinterval (): Termination timer

  • Format:
    Clearinterval (Timer object name)

    Example 1:
    <script><script language= "JavaScript" type= "Text/javascript" >
    var sec = 0;
    Timerid = SetInterval ("Count ()", 1000);
    function count () {
    num.innerhtml = sec++;
    }
    </Script>
    Stay time:
    <font id= "num" face= "impact" >0</FONT> seconds
    <input type= "button" value= "Stop" onclick= "Clearinterval (Timerid)" >
    Example 2:
    <script language= "JavaScript" type= "Text/javascript" >
    var str = "This is an online auction site, please enjoy the blood!" ";
    var seq = 0;
    function Scroll () {
    msg = str.substring (0, seq+1);
    banner.innerhtml = msg;
    seq++;
    if (seq >= str.length) seq = 0;
    }
    </Script>
    <body onload= "setinterval (' scroll () ',") ">
    <font id= "banner" ></FONT>

JS Timer Application

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