AJaX via jQuery documentation can be found here
AJaX without jQuery can be found here
I'm not going to write the code, for you. This forum is for helping troubleshoot erroneous code. I prefer the non-jQuery route, but that's your choice. If you go non-jQ, write up your xhr (XMLHttpRequest), call the Page1.html to get the code and put it in a string, then use JS RegEx
to get the start and end position of the code you want and use substr() to get that and put it into a string. Then give the element you want to display the data an id and document.getElementById("name").innerHTML = that string.