I have scenario like calling a lightning component from VF page. Once value updated in lightning component the value should be update in VF page.
I have used 'window.opener.location.href' in lightning client side controller to redirect to VF page from lightning component. But this event is blocked in lightning.
I have tried another approach in lightning component like:

<a href="!javascript:top.window.opener.closeCampaignLookup('{!a.id}','','','')">{!acc.Name}</a>

But could not save lightning component, since getting error like "Cannot mix expression and literal string in attribute value, try rewriting like {!'foo' + v.bar}: " Please help me on this.

I have scenario like calling a lightning component from VF page. Once value updated in lightning component the value should be update in VF page.
I have used 'window.opener.location.href' in lightning client side controller to redirect to VF page from lightning component. But this event is blocked in lightning.
I have tried another approach in lightning component like:

<a href="!javascript:top.window.opener.closeCampaignLookup('{!a.id}','','','')">{!acc.Name}</a>

But could not save lightning component, since getting error like "Cannot mix expression and literal string in attribute value, try rewriting like {!'foo' + v.bar}: " Please help me on this.