如何将光标移动到内容可编辑实体的末尾

如何将光标移动到内容可编辑实体的末尾

还有另一个问题。

如果的解决方案工作

contenteditable

DIV不包含其他元素multilined。

例如，如果一个div包含其他div，而这些其他div里面包含其他内容，则可能会出现一些问题。

为了解决这些问题，我安排了以下解决方案，它是对Nico的解决方案的改进：

//Namespace management idea from http://enterprisejquery.com/2010/10/how-good-c-habits-can-encourage-bad-javascript-habits-part-1/(function( cursorManager ) {    //From: http://www.w3.org/TR/html-markup/syntax.html#syntax-elements    var voidNodeTags = ['AREA', 'base', 'BR', 'COL', 'EMBED', 'HR', 'IMG', 'INPUT', 'KEYGEN', 'link', 'MENUITEM', 'meta', 'PARAM', 'SOURCE', 'TRACK', 'WBR', 'baseFONT', 'BGSOUND', 'frame', 'ISINDEX'];    //From: https://stackoverflow.com/questions/237104/array-containsobj-in-javascript    Array.prototype.contains = function(obj) {        var i = this.length;        while (i--) { if (this[i] === obj) {     return true; }        }        return false;    }    //Basic idea from: https://stackoverflow.com/questions/19790442/test-if-an-element-can-contain-text    function canContainText(node) {        if(node.nodeType == 1) { //is an element node return !voidNodeTags.contains(node.nodeName);        } else { //is not an element node return false;        }    };    function getLastChildElement(el){        var lc = el.lastChild;        while(lc && lc.nodeType != 1) { if(lc.previousSibling)     lc = lc.previousSibling; else     break;        }        return lc;    }    //based on Nico Burns's answer    cursorManager.setEndOfContenteditable = function(contentEditableElement)    {        while(getLastChildElement(contentEditableElement) &&   canContainText(getLastChildElement(contentEditableElement))) { contentEditableElement = getLastChildElement(contentEditableElement);        }        var range,selection;        if(document.createRange)//Firefox, Chrome, Opera, Safari, IE 9+        {     range = document.createRange();//Create a range (a range is a like the selection but invisible) range.selectNodeContents(contentEditableElement);//Select the entire contents of the element with the range range.collapse(false);//collapse the range to the end point. false means collapse to end rather than the start selection = window.getSelection();//get the selection object (allows you to change selection) selection.removeAllRanges();//remove any selections already made selection.addRange(range);//make the range you have just created the visible selection        }        else if(document.selection)//IE 8 and lower        {  range = document.body.createTextRange();//Create a range (a range is a like the selection but invisible) range.moveToElementText(contentEditableElement);//Select the entire contents of the element with the range range.collapse(false);//collapse the range to the end point. false means collapse to end rather than the start range.select();//Select the range (make it the visible selection        }    }}( window.cursorManager = window.cursorManager || {}));

用法：

var editableDiv = document.getElementById("my_contentEditableDiv");cursorManager.setEndOfContenteditable(editableDiv);

这样，游标肯定会定位在最后一个元素的末尾，并最终嵌套。

编辑＃1 ：为了更通用，while语句还应该考虑所有其他不能包含文本的标记。这些元素被称为 void元素
，在这个问题上，有一些方法可以测试元素是否为void。因此，假设存在一个调用的函数

canContainText

，

true

如果参数不是void元素，则该函数返回以下代码行：

contentEditableElement.lastChild.tagName.toLowerCase() != 'br'

应替换为：

canContainText(getLastChildElement(contentEditableElement))

编辑＃2 ：上面的代码已完全更新，描述和讨论的每个更改