事件驱动的JScript面对对象编程（例）

最新推荐文章于 2025-12-09 18:00:00 发布

原创最新推荐文章于 2025-12-09 18:00:00 发布 · 564 阅读

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CC 4.0 BY-SA版权

文章标签：

#编程 #function #input #html #文档

本文介绍了一个简单的可编辑文本组件的实现方式，该组件通过HTML和JavaScript构建，并使用事件驱动的方式进行管理。

程序的源代码如下：

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
</head>

<body>
<script language="jscript">
function EditableText(_owner){
this.owner = _owner;

this.edit = document.createElement("input");
this.edit.type = "text";
this.edit.onblur = this.onEditBlur;
this.edit.onclick = this.onEditClick;
this.edit.obj = this;

this.span = document.createElement("span");
this.span.innerText = "EditableText";
this.span.obj = this;
this.span.onclick = this.onSpanClick;

this.owner.appendChild(this.span);
}
function EditableText.prototype.onEditClick(){
event.cancelBubble = true;
}
function EditableText.prototype.onEditBlur(){
event.cancelBubble = true;
var self = this.obj;
self.span.innerHTML = "";
self.span.innerText = self.edit.value;
}
function EditableText.prototype.onSpanClick(){
event.cancelBubble = true;
var self = this.obj;
self.edit.value = this.innerText;
this.innerHTML = "";
this.appendChild(self.edit);
self.edit.focus();
}
////////////////////////////////////////////////////////////
function init(){
for(var i=0;i<20;i++){
new EditableText(document.body);
var br = document.createElement("br");
document.body.appendChild(br);
}
}
init();
</script>