做网站栏目是什么意思,做的网站如何发布会,北京网站建设市场,江西临川建设集团有限公司网站在实际开发中会遇到确实需要获取隐藏元素的宽高#xff0c;这儿所说的隐藏元素是display为none的元素。
可使用jQuery Actual Plugin插件来完成#xff0c;其源码如下#xff1a; ;( function ( $ ){$.fn.addBack $.fn.addBack || $.fn.andSelf;$.fn.extend({actual : fun…在实际开发中会遇到确实需要获取隐藏元素的宽高这儿所说的隐藏元素是display为none的元素。
可使用jQuery Actual Plugin插件来完成其源码如下 ;( function ( $ ){
$.fn.addBack $.fn.addBack || $.fn.andSelf;
$.fn.extend({
actual : function ( method, options ){
// check if the jQuery method exist
if( !this[ method ]){
throw $.actual The jQuery method method you called does not exist;
}
var defaults {
absolute : false,
clone : false,
includeMargin : false,
display : block
};
var configs $.extend( defaults, options );
var $target this.eq( 0 );
var fix, restore;
if( configs.clone true ){
fix function (){
var style position: absolute !important; top: -1000 !important; ;
// this is useful with css3pie
$target $target.
clone().
attr( style, style ).
appendTo( body );
};
restore function (){
// remove DOM element after getting the width
$target.remove();
};
}else{
var tmp [];
var style ;
var $hidden;
fix function (){
// get all hidden parents
$hidden $target.parents().addBack().filter( :hidden );
style visibility: hidden !important; display: configs.display !important; ;
if( configs.absolute true ) style position: absolute !important; ;
// save the origin style props
// set the hidden el css to be got the actual value later
$hidden.each( function (){
// Save original style. If no style was set, attr() returns undefined
var $this $( this );
var thisStyle $this.attr( style );
tmp.push( thisStyle );
// Retain as much of the original style as possible, if there is one
$this.attr( style, thisStyle ? thisStyle ; style : style );
});
};
restore function (){
// restore origin style values
$hidden.each( function ( i ){
var $this $( this );
var _tmp tmp[ i ];
if( _tmp undefined ){
$this.removeAttr( style );
}else{
$this.attr( style, _tmp );
}
});
};
}
fix();
// get the actual value with user specific methed
// it can be width, height, outerWidth, innerWidth... etc
// configs.includeMargin only works for outerWidth and outerHeight
var actual /(outer)/.test( method ) ?
$target[ method ]( configs.includeMargin ) :
$target[ method ]();
restore();
// IMPORTANT, this plugin only return the value of the first element
return actual;
}
});
})(jQuery); 当然如果要支持模块化开发直接使用官网下载的文件即可源码也贴上 ;( function ( factory ) {
if ( typeof define function define.amd ) {
// AMD. Register module depending on jQuery using requirejs define.
define( [jquery], factory );
} else {
// No AMD.
factory( jQuery );
}
}( function ( $ ){
$.fn.addBack $.fn.addBack || $.fn.andSelf;
$.fn.extend({
actual : function ( method, options ){
// check if the jQuery method exist
if( !this[ method ]){
throw $.actual The jQuery method method you called does not exist;
}
var defaults {
absolute : false,
clone : false,
includeMargin : false,
display : block
};
var configs $.extend( defaults, options );
var $target this.eq( 0 );
var fix, restore;
if( configs.clone true ){
fix function (){
var style position: absolute !important; top: -1000 !important; ;
// this is useful with css3pie
$target $target.
clone().
attr( style, style ).
appendTo( body );
};
restore function (){
// remove DOM element after getting the width
$target.remove();
};
}else{
var tmp [];
var style ;
var $hidden;
fix function (){
// get all hidden parents
$hidden $target.parents().addBack().filter( :hidden );
style visibility: hidden !important; display: configs.display !important; ;
if( configs.absolute true ) style position: absolute !important; ;
// save the origin style props
// set the hidden el css to be got the actual value later
$hidden.each( function (){
// Save original style. If no style was set, attr() returns undefined
var $this $( this );
var thisStyle $this.attr( style );
tmp.push( thisStyle );
// Retain as much of the original style as possible, if there is one
$this.attr( style, thisStyle ? thisStyle ; style : style );
});
};
restore function (){
// restore origin style values
$hidden.each( function ( i ){
var $this $( this );
var _tmp tmp[ i ];
if( _tmp undefined ){
$this.removeAttr( style );
}else{
$this.attr( style, _tmp );
}
});
};
}
fix();
// get the actual value with user specific methed
// it can be width, height, outerWidth, innerWidth... etc
// configs.includeMargin only works for outerWidth and outerHeight
var actual /(outer)/.test( method ) ?
$target[ method ]( configs.includeMargin ) :
$target[ method ]();
restore();
// IMPORTANT, this plugin only return the value of the first element
return actual;
}
});
})); 代码实例 //get hidden element actual width
$(.hidden).actual(width);
//get hidden element actual innerWidth
$(.hidden).actual(innerWidth);
//get hidden element actual outerWidth
$(.hidden).actual(outerWidth);
//get hidden element actual outerWidth and set the includeMargin argument
$(.hidden).actual(outerWidth,{includeMargin:true});
//get hidden element actual height
$(.hidden).actual(height);
//get hidden element actual innerHeight
$(.hidden).actual(innerHeight);
//get hidden element actual outerHeight
$(.hidden).actual(outerHeight);
// get hidden element actual outerHeight and set the includeMargin argument
$(.hidden).actual(outerHeight,{includeMargin:true});
//if the page jumps or blinks, pass a attribute { absolute : true }
//be very careful, you might get a wrong result depends on how you makrup your html and css
$(.hidden).actual(height,{absolute:true});
// if you use css3pie with a float element
// for example a rounded corner navigation menu you can also try to pass a attribute { clone : true }
// please see demo/css3pie in action
$(.hidden).actual(width,{clone:true}); 插件地址http://dreamerslab.com/works
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