How to clear all <div>s’ contents inside a parent <div>?

I have a div <div id="masterdiv"> which has several child <div>s.

Example:

<div id="masterdiv">
  <div id="childdiv1" />
  <div开发者_如何学运维 id="childdiv2" />
  <div id="childdiv3" />
</div>

How to clear the contents of all child <div>s inside the master <div> using jQuery?

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jQuery's empty() function does just that:

$('#masterdiv').empty();

clears the master div.

$('#masterdiv div').empty();

clears all the child divs, but leaves the master intact.

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jQuery('#masterdiv div').html('');

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Use jQuery's CSS selector syntax to select all div elements inside the element with id masterdiv. Then call empty() to clear the contents.

$('#masterdiv div').empty();

Using text('') or html('') will cause some string parsing to take place, which generally is a bad idea when working with the DOM. Try and use DOM manipulation methods that do not involve string representations of DOM objects wherever possible.

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I know this is a jQuery related question, but I believe someone might get here expecting a pure Javascript solution. So, if you were trying to do this using js, you could use the innerHTML property and set it to an empty string.

document.getElementById('masterdiv').innerHTML = '';

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jQuery recommend you use ".empty()",".remove()",".detach()"

if you needed delete all element in element, use this code :

$('#target_id').empty();

if you needed delete all element, Use this code:

$('#target_id').remove();

i and jQuery group not recommend for use SET FUNCTION like .html() .attr() .text() , what is that? it's IF YOU WANT TO SET ANYTHING YOU NEED

ref :https://learn.jquery.com/using-jquery-core/manipulating-elements/

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If all the divs inside that masterdiv needs to be cleared, it this.

$('#masterdiv div').html('');

else, you need to iterate on all the div children of #masterdiv, and check if the id starts with childdiv.

$('#masterdiv div').each(
    function(element){
        if(element.attr('id').substr(0, 8) == "childdiv")
        {
            element.html('');
        }
    }
 );

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The better way is :

 $( ".masterdiv" ).empty();

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$("#masterdiv div").text("");

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$("#masterdiv > *").text("")

or

$("#masterdiv").children().text("")

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$('#div_id').empty();

or

$('.div_class').empty();

Works Fine to remove contents inside a div

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You can use .empty() function to clear all the child elements

 $(document).ready(function () {
  $("#button").click(function () {
   //only the content inside of the element will be deleted
   $("#masterdiv").empty();
  });
 });

To see the comparison between jquery .empty(), .hide(), .remove() and .detach() follow here http://www.voidtricks.com/jquery-empty-hide-remove-detach/

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When you are appending data into div by id using any service or database, first try it empty, like this:

var json = jsonParse(data.d);
$('#divname').empty();

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$("#masterdiv div[id^='childdiv']").each(function(el){$(el).empty();});

or

$("#masterdiv").find("div[id^='childdiv']").each(function(el){$(el).empty();});

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try them if it help.

$('.div_parent .div_child').empty();

$('#div_parent #div_child').empty();