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js onload event and initialization button event sample code_javascript skills

WBOYOriginal: 2016-05-16 17:21:241549browse

The most common usage is . In fact, it can not only be used on the body, it also supports multiple HTML tags. The usage is as follows:

onload event when a page or It is triggered when an image is loaded.

Supported HTML tags:
, , , , <img>, <link>, <script> <br><br><strong>Example:</strong> <br>First method<br></p> <div class="codetitle"> <span><a style="CURSOR: pointer" data="78976" class="copybut" id="copybut78976" onclick="doCopy('code78976')"><u>Copy code</u></a></span> The code is as follows:</div> <div class="codebody" id="code78976"> <br><BODY onload="javascript:alert('liuzm.com')"></BODY> <br> </div> <br>Second method<br><div class="codetitle"> <span><a style="CURSOR: pointer" data="70690" class="copybut" id="copybut70690" onclick="doCopy('code70690')"><u>Copy code</u></a></span> The code is as follows:</div> <div class="codebody" id="code70690"> <br><script>window.onload=function (){alert('liuzm. com')}</script> <br><html> <br><head> <br><title>event test</title> <br></head> <br><body onload="init()"> <br> <br><button id="btn1" onclick="display()" >Binding method one</button> <br><br> <br><button id="btn2">Binding method two</button> <br><br><br> <br><button id="btn3">Binding method three</button> <br><br> <br><button id="btn4">Binding method four</button> <br></body&gt ; <br><br><script type="text/javascript"> <br>function init() { <br>document.getElementById("btn2").onclick = display;//Bind events for button2 <br>document.getElementById("btn4").attachEvent("onclick", display);//Bind events for button4<br>} <br> </div> <br>Instance: <br><div class="codetitle"> <span><a style="CURSOR: pointer" data="48663" class="copybut" id="copybut48663" onclick="doCopy('code48663')"><u>Copy code</u></a></span> The code is as follows:</div> <div class="codebody" id="code48663"> <br>function display(event) { <br>var targ;//Object reference that triggers the event <br>if (!event) { <br>var event = window.event;//Get the current event (IE) <br>} <br>if (event.target) {//IE has no target <br>targ = evente.target; <br>} else if (event.srcElement) {//Applicable to IE <br>targ = event.srcElement; <br>} <br><br>//Operation on the object that triggers the event <br>alert(targ.tagName "-" targ.id "-" event.x "-" event.offsetX); <br>targ.disabled="disabled" ; <br>} <br></script&gt ; <BR><script for="btn3" event="onclick"> <br>display();//Bind events for button3 <br></script> <br> </div></div><div class="nphpQianMsg"><div class="clear"></div></div><div class="nphpQianSheng"><span>Statement：</span><div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. 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