在JavaScript中添加事件监听器

Question

I have a JavaScript and divs defined using CSS3 classes. I need to add event listener to specific class div but it is not getting bound to it.

eg:

this._incrementEnabled = document.createElement('div');
this._incrementEnabled.className = this._incrementButtonProperties.enabledClass;
this.divElt.appendChild(this._incrementEnabled);

if (this.properties.incrementButtonConfig.enabled == null) {
    this.properties.incrementButtonConfig.enabled = false;
}

this.setIncrementEnabled(this.properties.incrementButtonConfig.enabled);

this._incrementEnabled.addEventListener('click', this._incrementButtonProperties.incrementSelectCallback, false);

and the CSS:

.SchedMainCtrlIncrementBtn_En {
    position: absolute;
    top: 3px;
    left: 240px;
    display: inline-block;
    font-size: 28px;
    vertical-align: middle; 
    width: 35px;
    height: 65px;
    height: 35px;
    background: url("../../../images/icons/IcnListAddRecipient_En.png") no-repeat center;
}

Answer 1

something like this:

var divs = document.querySelectorAll( 'div.yourclass' );
for( var i=0; i < divs.length; i++ ){
    divs[ i ].addEventListener( 'eventname', callback, false );
}

EDIT:

From reading your code with this very long variable names I conclude that you want to do something like this:

this.element = document.createElement( 'div' );
this.element.className = 'someName';
this.parentElement.appendChild( this.element );
this.element.addEventListener( 'click', callback, false );

So if this.parentElement is not defined, or if callback is not defined it wont work. I do not know how you coded the class, but all used functions ( document.createElement , appendChild , addEventListener ) are native functions, so they work.

Answer 2

如果可能的话，尝试使用Jquery会更简单，您可以使用$('.class').click(function(){})