jQuery empty()和remove()函数是否异步执行？

Question

do jQuery.fn.empty()和remove()函数是否异步执行？我在jQuery文档中找不到这个问题的答案.

Answer 1

他们都是同步的.您可以查看实际实现的来源:

remove: function( selector, keepData ) {
    var elem,
        elems = selector ? jQuery.filter( selector, this ) : this,
        i = 0;

    for ( ; (elem = elems[i]) != null; i++ ) {
        if ( !keepData && elem.nodeType === 1 ) {
            jQuery.cleanData( getAll( elem ) );
        }

        if ( elem.parentNode ) {
            if ( keepData && jQuery.contains( elem.ownerDocument, elem ) ) {
                setGlobalEval( getAll( elem, "script" ) );
            }
            elem.parentNode.removeChild( elem );
        }
    }

    return this;
},

empty: function() {
    var elem,
        i = 0;

    for ( ; (elem = this[i]) != null; i++ ) {
        if ( elem.nodeType === 1 ) {

            // Prevent memory leaks
            jQuery.cleanData( getAll( elem, false ) );

            // Remove any remaining nodes
            elem.textContent = "";
        }
    }

    return this;
},

你可以忽略keepData和cleanData的东西,所以你留下了所有的是一个循环,并到本地DOM方法或DOM对象属性修改的呼叫.这些都是同步的.