클래스 이름으로 요소를 제거 하시겠습니까?

클래스 이름으로 요소를 제거 하시겠습니까?

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클래스 이름을 가진 요소를 찾기 위해 아래 코드가 있습니다.

// Get the element by their class name
var cur_columns = document.getElementsByClassName('column');

// Now remove them

for (var i = 0; i < cur_columns.length; i++) {

}

제거하는 방법을 모르겠습니다 ... 부모를 참조해야합니까? 이를 처리하는 가장 좋은 방법은 무엇입니까?

@ Karim79 :

다음은 JS입니다.

var col_wrapper = document.getElementById("columns").getElementsByTagName("div");
var len = col_wrapper.length;

alert(len);

for (var i = 0; i < len; i++) {
    if (col_wrapper[i].className.toLowerCase() == "column") {
        col_wrapper[i].parentNode.removeChild(col_wrapper[i]);
    }
}

다음은 HTML입니다.

<div class="columns" id="columns">
    <div class="column"><input type="checkbox" name="col_list[]" value="cows">cows</div>
    <div class="column"><input type="checkbox" name="col_list[]" value="cows">cows</div>
    <div class="column"><input type="checkbox" name="col_list[]" value="cows">cows</div>
    <div class="column"><input type="checkbox" name="col_list[]" value="cows">cows</div>
    <div name="columnClear" class="contentClear" id="columnClear"></div>
</div>

편집 : jQuery 옵션을 사용하여 끝났습니다.

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jQuery를 사용하면 (이 경우 실제로 사용할 수 있다고 생각합니다) 다음과 같이 할 수 있습니다.

$('.column').remove();

그렇지 않으면 각 요소의 부모를 사용하여 제거해야합니다.

element.parentNode.removeChild(element);

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JQuery를 사용하지 않으려는 경우 :

function removeElementsByClass(className){
    var elements = document.getElementsByClassName(className);
    while(elements.length > 0){
        elements[0].parentNode.removeChild(elements[0]);
    }
}

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ES6 를 사용 하면 다음과 같이 할 수 있습니다.

const removeElements = (elms) => elms.forEach(el => el.remove());

// Use like:
removeElements( document.querySelectorAll(".remove") );

<p class="remove">REMOVE ME</p>
<p>KEEP ME</p>
<p class="remove">REMOVE ME</p>

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jQuery없이 다음을 수행 할 수 있습니다.

const elements = document.getElementsByClassName("my-class");

while (elements.length > 0) elements[0].remove();

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Brett - are you aware that getElementyByClassName support from IE 5.5 to 8 is not there according to quirksmode?. You would be better off following this pattern if you care about cross-browser compatibility:

• Get container element by ID.
• Get needed child elements by tag name.
• Iterate over children, test for matching className property.
• elements[i].parentNode.removeChild(elements[i]) like the other guys said.

Quick example:

var cells = document.getElementById("myTable").getElementsByTagName("td");
var len = cells.length;
for(var i = 0; i < len; i++) {
    if(cells[i].className.toLowerCase() == "column") {
        cells[i].parentNode.removeChild(cells[i]);
    }
}

Here's a quick demo.

EDIT: Here is the fixed version, specific to your markup:

var col_wrapper = document.getElementById("columns").getElementsByTagName("div");

var elementsToRemove = [];
for (var i = 0; i < col_wrapper.length; i++) {
    if (col_wrapper[i].className.toLowerCase() == "column") {
        elementsToRemove.push(col_wrapper[i]);
    }
}
for(var i = 0; i < elementsToRemove.length; i++) {
    elementsToRemove[i].parentNode.removeChild(elementsToRemove[i]);
}

The problem was my fault; when you remove an element from the resulting array of elements, the length changes, so one element gets skipped at each iteration. The solution is to store a reference to each element in a temporary array, then subsequently loop over those, removing each one from the DOM.

Try it here.

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This works for me

while (document.getElementsByClassName('my-class')[0]) {
        document.getElementsByClassName('my-class')[0].remove();
    }

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I prefer using forEach over for/while looping. In order to use it's necessary to convert HTMLCollection to Array first:

Array.from(document.getElementsByClassName("post-text"))
    .forEach(element => element.remove());

Pay attention, it's not necessary the most efficient way. Just much more elegant for me.

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Yes, you have to remove from the parent:

cur_columns[i].parentNode.removeChild(cur_columns[i]);

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You can use this syntax: node.parentNode

For example:

someNode = document.getElementById("someId");
someNode.parentNode.removeChild(someNode);

---

Recursive function might solve your problem like below

removeAllByClassName = function (className) {
    function findToRemove() {
        var sets = document.getElementsByClassName(className);
        if (sets.length > 0) {
            sets[0].remove();
            findToRemove();
        }
    }
    findToRemove();
};
//
removeAllByClassName();

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In case you want to remove elements which are added dynamically try this:

document.body.addEventListener('DOMSubtreeModified', function(event) {
    const elements = document.getElementsByClassName('your-class-name');
    while (elements.length > 0) elements[0].remove();
});

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const elem= document.getElementsByClassName('column')

for (let i = elem.length; 0 < i ; )
    elem[--i].remove();

OR

const elem= document.getElementsByClassName('column')

while (elem.length > 0 )
    elem[0].remove();

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The skipping elements bug in this (code from above)

var len = cells.length;
for(var i = 0; i < len; i++) {
    if(cells[i].className.toLowerCase() == "column") {
        cells[i].parentNode.removeChild(cells[i]);
    }
}

can be fixed by just running the loop backwards as follows (so that the temporary array is not needed)

var len = cells.length;
for(var i = len-1; i >-1; i--) {
    if(cells[i].className.toLowerCase() == "column") {
        cells[i].parentNode.removeChild(cells[i]);
   }
}

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You can you use a simple solution, just change the class, the HTML Collection filter is updated:

var cur_columns = document.getElementsByClassName('column');

for (i in cur_columns) {
   cur_columns[i].className = '';
}

Ref: http://www.w3.org/TR/2011/WD-html5-author-20110705/common-dom-interfaces.html

참고URL : https://stackoverflow.com/questions/4777077/removing-elements-by-class-name