[英]Calling javascript class function with setTimeout from click handler set within the class
我想定义一个javascript类,在html页面中实例化它的实例,并让该类设置一个单击处理程序,然后使用setTimeout(...)来调用该类的成员函数。
目前,这对我来说还行不通,因为我很难理解确定类和/或调用以及所创建对象的用法的正确方法。 我希望有人可以通过以下示例为我提供帮助。
下面的代码对$(...)这是jquery进行了一些引用,目的是为了澄清可能读过它但无法识别它的任何人。
我将以下内容用作JavaScript代码中类的基础:
// Taken from http://www.htmlgoodies.com/html5/tutorials/create-an-object-oriented-javascript-class-constructor.html
// Base class from which we can derive our own classes with ease
var Class = function (methods) {
var klass = function () {
this.initialize.apply(this, arguments);
};
for (var property in methods) {
klass.prototype[property] = methods[property];
}
if (!klass.prototype.initialize) klass.prototype.initialize = function () { };
return klass;
};
然后,我也使用我的JavaScript类对此进行扩展:
var myNamespace = myNamespace || {};
myNamespace.myClass = Class({
somevalue: 100,
initialize: function(somevalue) {
this.somevalue = somevalue;
$("#searchclear").click(function () {
setTimeout(myFunction,1000); // THIS DOES NOT WORK as the context is now the searchclear html element
myFunction(); // For completeness, this would not work either for the same reason
});
}),
myFunction: function() {
alert('we are ok');
}
});
我的HTML看起来像这样:
<body>
...
<script>
$(document).ready(function () {
var myInstance = new myNamespace.myClass(123);
});
</script>
<span id='searchclear'>CLICK ME</span>
...
</body>
问题是,如何在单击“ searchclear” HTML对象时被调用的单击处理程序中对myFunction进行两次调用?
你有没有尝试过:?
myNamespace.myClass = Class({
somevalue: 100,
var self = this;
initialize: function(somevalue) {
this.somevalue = somevalue;
$("#searchclear").click(function () {
setTimeout(self.myFunction,1000); // THIS DOES NOT WORK as the context is now the searchclear html element
self.myFunction(); // For completeness, this would not work either for the same reason
});
}),
self.myFunction: function() {
alert('we are ok');
}
});
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