道非道 非常道

[轉(zhuǎn)] 使用JAVAScript 編寫的HTML在線編輯器

document.execCommand(command, false, value);
一、首先來(lái)看一個(gè)例子：

<DIV contenteditable="true" style="border:dashed blue 2px">Hello World!</DIV>

保存為html網(wǎng)頁(yè)，打開看看，在DIV里出現(xiàn)了一個(gè)光標(biāo)，這個(gè)DIV就變成可以編輯的了。

類似的，SPAN，F(xiàn)ONT等都可以有 contenteditable="true"  這個(gè)屬性。

再試試下面的：

<DIV contenteditable="true" style="border:dashed blue 2px">Hello World!
    <IMG src="http://p.blog.csdn.net/images/p_blog_csdn_net/comstep/70786/o_logo.jpg" />
</DIV>
我們就可以拉伸圖片了。

二、具體實(shí)現(xiàn)：

    1、需要兩個(gè)頁(yè)面，blank.html editor.html

    2、blank.html 作為 editor.html的一個(gè)內(nèi)嵌Frame，作為編輯框。

三、后記：

這里寫的只是一個(gè)簡(jiǎn)單的編輯器，其實(shí)重要的就是：

contenteditable="true"

和

document.execCommand(command, false, value);

關(guān)于 document 的一些方法，可以查看MS的文檔。

execCommand 的一些命令也可以在文檔里找到，下面列出一些：

execCommand(command, false, value); 中的 command 可以是以下這些：

BackColor	Sets or retrieves the background color of the current selection.
Bold	Toggles the current selection between bold and nonbold.
ClearAutocompleteForForms	Clears saved forms data.
Copy	Copies the current selection to the clipboard.
CreateBookmark	Retrieves the name of a bookmark anchor or creates a bookmark anchor for the current selection or insertion point.
CreateLink	Retrieves the URL of a hyperlink or creates a hyperlink on the current selection.
Cut	Copies the current selection to the clipboard and then deletes it.
Delete	Deletes the current selection.
FontName	Sets or retrieves the font for the current selection.
FontSize	Sets or retrieves the font size for the current selection.
ForeColor	Sets or retrieves the foreground (text) color of the current selection.
FormatBlock	Sets or retrieves the current block format tag.
Indent	Increases the indent of the selected text by one indentation increment.
InsertButton	Overwrites a button control on the current selection.
InsertFieldset	Overwrites a box on the current selection.
InsertHorizontalRule	Overwrites a horizontal line on the current selection.
InsertIFrame	Overwrites an inline frame on the current selection.
InsertImage	Overwrites an image on the current selection.
InsertInputButton	Overwrites a button control on the current selection.
InsertInputCheckbox	Overwrites a check box control on the current selection.
InsertInputFileUpload	Overwrites a file upload control on the current selection.
InsertInputHidden	Inserts a hidden control on the current selection.
InsertInputImage	Overwrites an image control on the current selection.
InsertInputPassword	Overwrites a password control on the current selection.
InsertInputRadio	Overwrites a radio control on the current selection.
InsertInputReset	Overwrites a reset control on the current selection.
InsertInputSubmit	Overwrites a submit control on the current selection.
InsertInputText	Overwrites a text control on the current selection.
InsertMarquee	Overwrites an empty marquee on the current selection.
InsertOrderedList	Toggles the current selection between an ordered list and a normal format block.
InsertParagraph	Overwrites a line break on the current selection.
InsertSelectDropdown	Overwrites a drop-down selection control on the current selection.
InsertSelectListbox	Overwrites a list box selection control on the current selection.
InsertTextArea	Overwrites a multiline text input control on the current selection.
InsertUnorderedList	Toggles the current selection between an ordered list and a normal format block.
Italic	Toggles the current selection between italic and nonitalic.
JustifyCenter	Centers the format block in which the current selection is located.
JustifyLeft	Left-justifies the format block in which the current selection is located.
JustifyRight	Right-justifies the format block in which the current selection is located.
Outdent	Decreases by one increment the indentation of the format block in which the current selection is located.
OverWrite	Toggles the text-entry mode between insert and overwrite.
Paste	Overwrites the contents of the clipboard on the current selection.
Refresh	Refreshes the current document.
RemoveFormat	Removes the formatting tags from the current selection.
SelectAll	Selects the entire document.
SaveAs	Saves the current Web page to a file.
UnBookmark	Removes any bookmark from the current selection.
Underline	Toggles the current selection between underlined and not underlined.
Unlink	Removes any hyperlink from the current selection.
Unselect	Clears the current selection.

posted on 2008-11-26 10:38 星期五 閱讀(245) 評(píng)論(0)  編輯  收藏