Ajax does not execute other page javascript

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I been researching for a long time and i'm so confused I read that you have to use the eval() function so plain ajax can recognize and execute the JavaScript on the other page I read thru a lot of sites but there is rarely no info on this or no examples that makes sense to me so can any one add the right code to my code to get this to work. I'm a visual learner.

index.php

HTML

<script>
var xhr= new XMLHttpRequest();
xhr.onreadystatechange= function(){
    if(xhr.readyState === 4){
        document.getElementById('ajax').innerHTML= xhr.responseText;
    }
};
xhr.open('POST','x.php');

function startAjax(){
    xhr.send();
document.getElementById('hide_button').style.display= 'none';
    }
    </script>
    <body>
    <button id='hide_button' onclick='startAjax()'>Start</button>
    <div id='ajax'></div>
    </body>

x.php

<script>
alert('js is executed');
</script>

<h1>Radom text</h1>

What I have tried:

I have gone to other chat sites but no good answers usually confusing links were provided. And this is rarely mentioned on google so yeah.

Posted 3-Jan-18 9:59am

Member 13605567

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