Use

can-view-live is an object with utility methods for setting up
live-binding in relation to different parts of the DOM and DOM elements. For
example, to make an <h2>'s text stay live with
a compute:

var live = require("can-view-live");   
var text = canCompute("Hello World");  
var textNode = $("h2").text(" ")[0].childNodes[0]; 
live.text(textNode, text);