Solution 1 :

Using document.querySelectorAll('.classname > p') it will return all p elements,then from second element remove it

let peles = document.querySelectorAll('.classname > p')
for(let i=1;i<peles.length;i++){
   peles[i].remove()
}
<div class='classname'>
    <p>Lorem ip purus hendrerit quam. Mauris convallis dolor vel ex placerat, non imperdiet dolor lacinia. </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
</div>

Update

If there are more divs,then you can using following

let divs = document.querySelectorAll('.classname')
for(div of divs){
  let ps = div.querySelectorAll('p')
  for(let i=1;i<ps.length;i++){
    ps[i].remove()
  }
}
<div class='classname'>
    <p>Lorem ip purus hendrerit quam. Mauris convallis dolor vel ex placerat, non imperdiet dolor lacinia. </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
</div>

<div class='classname'>
    <p>Lorem ip purus hendrerit quam. Mauris convallis dolor vel ex placerat, non imperdiet dolor lacinia. </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
</div>

Solution 2 :

If you need to enforce this every time, you might not even need to check how many <p> elements are inside the classname, and just remove all but the first child.

const elements = document.querySelectorAll('.classname > p:nth-of-type(n+2)');
elements.forEach(e => e.remove());
<div class="classname">
  <p>1. Lorem ip purus hendrerit quam. Mauris convallis dolor vel ex placerat, non imperdiet dolor lacinia. </p>
  <p>2. Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
  <p>3. Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
  <p>4. Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
</div>

This code takes advantage of the CSS selector :nth-of-type which will select all p elements (In case you want to have other type of tags in there)
And also the functional notation n+2 which offsets our selection to spare the first child.

Problem :

Hello Experts is there any way to remove existing p tags inside the class? if it is more than 1 using JavaScript.

Example:

 <div class='classname'>
    <p>Lorem ip purus hendrerit quam. Mauris convallis dolor vel ex placerat, non imperdiet dolor lacinia. </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
     <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
      <p>Lorem ipsum m ip purus hendrerit quam. Mauris convallis dolor v </p>
    </div>`


Expected Result:

<div class='classname'>
         <p>Lorem ip purus hendrerit quam. Mauris convallis dolor vel ex placerat, non imperdiet dolor lacinia. </p>

Comments

Comment posted by lucumt

Seems you have just posted a few moments ago

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