Javascript to implement drag-and-color and close Layer window instances

Last Update:2015-05-18 Source: Internet

Author: User

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The example in this article describes how to implement drag-and-color and close layer windows in javascript. Share it with you for your reference. The specific analysis is as follows:

This is a javascript + CSS Implementation Layer-based Drag code, the difference is that it will change color when dragging the window, so that the operation experience is better, you can run the code to view the effect. It can also display/hide or close the open effect. When it's okay, repeat it.

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<Html>

<Head>

<Title> drag a window </title>

<! --

Body {font-size: 12px ;}

A: visited {text-decoration: none; color: slategray ;}

A: hover {text-decoration: underline; color: slategray ;}

A: link {text-decoration: none; color: slategray ;}

-->

</Style>

<! --

Var x0 = 0, y0 = 0, x1 = 0, y1 = 0;

Var offx = 6, offy = 6;

Var moveable = false;

Var hover = 'Orange ', normal =' #336699 '; // color;

Var index = 10000; // z-index;

// Start dragging;

Function startDrag (obj)

{

If (event. button = 1)

{

// Lock the title bar;

Obj. setCapture ();

// Define the object;

Var win = obj. parentNode;

Var sha = win. nextSibling;

// Record the mouse and layer position;

X0 = event. clientX;

Y0 = event. clientY;

X1 = parseInt (win. style. left );

Y1 = parseInt (win. style. top );

// Record the color;

Normal = obj. style. backgroundColor;

// Change the style;

Obj. style. backgroundColor = hover;

Win. style. borderColor = hover;

Obj. nextSibling. style. color = hover;

Sha. style. left = x1 + offx;

Sha. style. top = y1 + offy;

Moveable = true;

}

// Drag;

Function drag (obj)

{

If (moveable)

{

Var win = obj. parentNode;

Var sha = win. nextSibling;

Win. style. left = x1 + event. clientX-x0;

Win. style. top = y1 + event. clientY-y0;

Sha. style. left = parseInt (win. style. left) + offx;

Sha. style. top = parseInt (win. style. top) + offy;

}

// Stop dragging;

Function stopDrag (obj)

{

If (moveable)

{

Var win = obj. parentNode;

Var sha = win. nextSibling;

Var msg = obj. nextSibling;

Win. style. borderColor = normal;

Obj. style. backgroundColor = normal;

Msg. style. color = normal;

Sha. style. left = obj. parentNode. style. left;

Sha. style. top = obj. parentNode. style. top;

Obj. releaseCapture ();

Moveable = false;

}

// Obtain the focus;

Function getFocus (obj)

{

If (obj. style. zIndex! = Index)

{

Index = index + 2;

Var idx = index;

Obj. style. zIndex = idx;

Obj. nextSibling. style. zIndex = idx-1;

}

// Minimize;

Function min (obj)

{

Var win = obj. parentNode. parentNode;

Var sha = win. nextSibling;

Var tit = obj. parentNode;

Var msg = tit. nextSibling;

Var flg = msg. style. display = "none ";

If (flg)

{

Win. style. height = parseInt (msg. style. height) + parseInt (tit. style. height) + 2*2;

Sha. style. height = win. style. height;

Msg. style. display = "block ";

Obj. innerHTML = "0 ";

}

Else

{

Win. style. height = parseInt (tit. style. height) + 2*2;

Sha. style. height = win. style. height;

Obj. innerHTML = "2 ";

Msg. style. display = "none ";

}

// Create an object;

Function xWin (id, w, h, l, t, tit, msg)

{

Index = index + 2;

This. id = id;

This. width = w;

This. height = h;

This. left = l;

This. top = t;

This. zIndex = index;

This. title = tit;

This. message = msg;

This. obj = null;

This. bulid = bulid;

This. bulid ();

}

// Initialization;

Function bulid ()

{

Var str = ""

+ "<Div id = xMsg" + this. id + ""

+ "Style = '"

+ "Z-index:" + this. zIndex + ";"

+ "Width:" + this. width + ";"

+ "Height:" + this. height + ";"

+ "Left:" + this. left + ";"

+ "Top:" + this. top + ";"

+ "Background-color:" + normal + ";"

+ "Color:" + normal + ";"

+ "Font-size: 8pt ;"

+ "Font-family: Tahoma ;"

+ "Position: absolute ;"

+ "Cursor: default ;"

+ "Border: 2px solid" + normal + ";"

+ "'"

+ "Onmousedown = 'getfocus (this) '>"

+ "<Div"

+ "Style = '"

+ "Background-color:" + normal + ";"

+ "Width:" + (this. width-2*2) + ";"

+ "Height: 20 ;"

+ "Color: white ;"

+ "'"

+ "Onmousedown = 'startdrag (this )'"

+ "Onmouseup = 'stopdrag (this )'"

+ "Onmousemove = 'drag (this )'"

+ "Ondblclick = 'min (this. childNodes [1]) '"

+ ">"

+ "<Span style = 'width:" + (this. width-2*12-4) + "; padding-left: 3px; '>" + this. title + "</span>"

+ "<Span style = 'width: 12; border-width: 0px; color: white; font-family: webdings; 'onclick = 'min (this) '> 0 </span>"

+ "<Span style = 'width: 12; border-width: 0px; color: white; font-family: webdings; 'onclick = 'showhide (\" "+ this. id + "\", null) '> r </span>"

+ "</Div>"

+ "<Div style = '"

+ "Width: 100% ;"

+ "Height:" + (this. height-20-4) + ";"

+ "Background-color: white ;"

+ "Line-height: 14px ;"

+ "Word-break: break-all ;"

+ "Padding: 3px ;"

+ "'>" + This. message + "</div>"

+ "</Div>"

+ "<Div id = xMsg" + this. id + "bg style = '"

+ "Width:" + this. width + ";"

+ "Height:" + this. height + ";"

+ "Top:" + this. top + ";"

+ "Left:" + this. left + ";"

+ "Z-index:" + (this. zIndex-1) + ";"

+ "Position: absolute ;"

+ "Background-color: black ;"

+ "Filter: alpha (opacity = 40 );"

+ "'> </Div> ";

Document. body. insertAdjacentHTML ("beforeEnd", str );

}

// Display the hidden window

Function ShowHide (id, dis ){

Var bdisplay = (dis = null )? (Document. getElementById ("xMsg" + id). style. display = "")? "None": ""): dis

Document. getElementById ("xMsg" + id). style. display = bdisplay;

Document. getElementById ("xMsg" + id + "bg"). style. display = bdisplay;

}

// -->

</Script>

<! --

Function initialize ()

{

Var a = new xWin ("1", 160,200,200,200, "Window 1", "xWin Demo ");

Var B = new xWin ("2", 240,200,100,100, "window 2", "Welcome ");

Var c = new xWin ("3", 200,160,250, 50, "window 3", "Copyright ");

ShowHide ("1", "none"); // hide window 1

}

Window. onload = initialize;

// -->

</Script>

</Head>

<A onclick = "ShowHide ('1', null); return false;" href = ""> Windows 1 </a>

<A onclick = "ShowHide ('2', null); return false;" href = ""> Windows 2 </a>

<A onclick = "ShowHide ('3', null); return false;" href = ""> Windows 3 </a>

</Body>

</Html>

I hope this article will help you design javascript programs.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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Javascript to implement drag-and-color and close Layer window instances

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