javascript - Trying to swap the title attribute of a paragraph with the content of the paragraph -

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for example want change html :

<p title="title text">content text</p>

into this:

<p title="content text">title text</p>

so far have code make title value equal in <p>

window.addeventlistener("load",init);  function init(){  var b = document.queryselector("p"); b.setattribute("title",b.textcontent);  console.log(b); }

swap them using variable holds value while updating 

window.addeventlistener("load", init);    function init() {    var b = document.queryselector("p");    var temp = b.textcontent;    b.textcontent = b.getattribute("title");    b.setattribute("title", temp);    console.log(b);  }
<p title="title text">content text</p>


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