My implementation of LinkButton for ExtJS. It can be used as a link directly (set 'stopEvent' to false) or as a button (use subscription to 'click' event)

Example of using

	xtype: 'linkbutton',
	style: 'font-size: 18px; font-weight: bold',
	//stopEvent: false, // if you need direct link
	title: 'Go to Some Link',
	path: '#job/view',
	text : 'Some link'
	
	/*
	if you need some extra params in link after render LinkButton you can use
	some code like this one:
	*/
	var linkbtn = view.down('linkbutton');
	linkbtn.setParams({id: 'new id'});
	/*
	You will get link like #job/view?id=new id
	*/

LinkButton.css

a.x-linkbutton-default,
a.x-linkbutton-default:visited {
    color:#00A;
}
a.x-linkbutton-default:hover {
    text-decoration:underline;
}

LinkButton.js

Ext.define('Ext.ux.LinkButton', {
    extend: 'Ext.Component',
    alias: 'widget.linkbutton',
    baseCls: Ext.baseCSSPrefix + 'linkbutton',
    autoEl: {
        tag: 'a',
        href: this.path,
        title: this.title
    },
    renderTpl: '{text}',
    path: '#',
    title: null,
    defaultParams: {},
    stopEvent: true,
    initComponent: function () {
        'use strict';
        var me = this;
        me.renderData = {
            text: me.text
        };
        me.addEvents('click');
        me.superclass.initComponent.apply(me, arguments);
    },
    afterRender: function () {
        'use strict';
        var me = this;
        me.mon(me.getEl(), 'click', me.handler, me, {stopEvent: me.stopEvent});
        me.setParams();
    },
    setParams: function (params) {
        'use strict';
        var me = this,
            el = me.getEl(),
            p,
            prop,
            path;
        p = Ext.clone(me.defaultParams);
        if (params) {
            p = Ext.merge(p, params);
        }
        path = me.path + '?';
        for (prop in p) {
            if (p.hasOwnProperty(prop)) {
                path += prop + '=' + p[prop] + '&';
            }
        }
        path = path.substring(0, path.length - 1);
        if (el && el.dom) {
            el.dom.href = path;
            el.dom.title = me.title;
        }
    },
    handler: function (e, el, eOpts) {
        'use strict';
        var me = this;
        me.fireEvent('click', me, e, eOpts);
    }
});

Thanks for this, it was exactly what I needed