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JavaScript event that reloads the page

开发者 https://www.devze.com 2023-01-11 05:22 出处:网络
In the example code below I have a button that when clicked reloads the page, but hitting enter does not do so, how would one amend it so that hitting enter would also refresh the page?

In the example code below I have a button that when clicked reloads the page, but hitting enter does not do so, how would one amend it so that hitting enter would also refresh the page?

&l开发者_如何转开发t;h3>click to refresh page</h3>
<input type="button" value="Refresh" onClick="history.go(0)">


You could set a key handler on the page itself if you want to catch any ENTER keypress anywhere:

function catchCR(e) {
  if (!e) {
    e = window.event; // for IE
  }
  var key = 0;
  if (e.keyCode) { key = e.keyCode; } // IE
  if (e.which) { key = e.which; } // FF

  if (key == 13 /* enter key */) {
    history.go(0);
  }
}
if (document.addEventListener) {
  document.addEventListener("keydown", catchCR, true);
} else if (document.attachEvent) {
  document.attachEvent("onkeydown",catchCR);
}


You can do it like this:

<h3>click to refresh page</h3>
<form onSubmit="history.go(0); return false;">
<input type="submit" value="Search"></form>


You need to set the focus. In your onload function:

var button = document.getElementById("mybutton"); 
button.focus(); 

You could also add an on key press event:

http://help.dottoro.com/ljlwfxum.php

http://www.devguru.com/Technologies/ecmascript/quickref/evhan_onkeypress.html


You could do by setting an event on the document.

Try this:

//Traditional Way
document.onkeypress = function(event){
    event = event || window.event;
    key=event.keyCode;
    if (key == "13") //Enter
    {
         history.go(0);
    }
};

//OR

function keyHandler(event){
    event = event || window.event;
    key=event.keyCode;
    if (key == "13") //Enter
    {
         history.go(0);
    }

}
//Modern W3c Way
if (document.addEventListener) {
  document.addEventListener("keydown", keyHandler, false);
}
//IE Way 
else if (document.attachEvent) {
  document.attachEvent("onkeydown",keyHandler);
}
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