Javascript jQuery-如何使用元素的HTML获取所有样式/css(在内部/外部文档中定义)
我知道Javascript jQuery-如何使用元素的HTML获取所有样式/css(在内部/外部文档中定义),javascript,jquery,css,styles,Javascript,Jquery,Css,Styles,我知道$(“#divId”).html()将为我提供innerHtml。我还需要它的样式(可以通过类的方式定义),可以是内联的style属性,也可以是单独的标记中的所有样式/类 可能吗 更新 如果html类似于cfwcvb,并且在外部样式表中定义了#testDiv的css类,该怎么办 更新2 很抱歉没有早些澄清这一点 如果这是我的HTML <div id="divId"> <span class="someClass">Some innerText</spa
$(“#divId”).html()
将为我提供innerHtml。我还需要它的样式(可以通过类的方式定义),可以是内联的style
属性,也可以是单独的
标记中的所有样式/类
可能吗
更新如果html类似于
cfwcvb
,并且在外部样式表中定义了#testDiv
的css类,该怎么办
更新2很抱歉没有早些澄清这一点 如果这是我的HTML
<div id="divId">
<span class="someClass">Some innerText</span>
</div>
然后,当我尝试获取$(“#divId”).html()的内部html或调用任何其他自定义函数时,我需要如下内容
<style>
#divId {
clear: both;
padding: 3px;
border: 2px dotted #CCC;
font-size: 107%;
line-height: 130%;
width: 660px;
}
.someClass {
color: blue;
}
</style>
<div id="divId">
<span class="someClass">Some innerText</span>
</div>
.css()方法获取元素的特定样式。。。我不知道您是否可以检索所有样式:
通常,您可以使用.attr('style')访问样式参数。如果您想访问计算样式,可以在Opera、Firefox、Chrome和其他sane浏览器中使用window.getComputedStyle(元素)。对于IE,您也可以对element.currentStyle执行相同的操作
如果您希望访问单个CSS样式,也可以使用jQuery.CSS方法。例如$(“#divId”).css('font-size')。您可以在脚本中使用类似的内容:-
<script type="text/javascript" src="http://code.jquery.com/jquery-1.4.4.js"></script>
<script type="text/javascript">
$(function(){
var styleVal = $('#testDiv').attr('style');
console.warn("styleVal >>> " + styleVal);
})
</script>
$(函数(){
var styleVal=$('#testDiv').attr('style');
console.warn(“styleVal>>>”+styleVal);
})
简单的html是这样的
<div style="border:1px solid red;" id="testDiv">cfwcvb</div>
cfwcvb
您可以获得一个样式对象,该对象表示在大多数浏览器中使用的元素的计算样式以及IE中元素的属性。但是,在浏览器中,对于快捷方式属性返回的值(例如background
)、颜色RGB值、长度,甚至font-weight
(请参见)。仔细测试
function computedStyle(el) {
return el.currentStyle || window.getComputedStyle(el, null);
}
alert(computedStyle(document.body).color);
如果你想保存一个元素的所有样式,我想这会像你想的那样复杂
首先,我的第一个ide是firebug css控制台。这显示了一个元素的所有样式,我想怎么做?
因此,我搜索了firebug的源代码,发现:
此代码仅适用于css部分
const styleGroups =
{
text: [
"font-family",
"font-size",
"font-weight",
"font-style",
"color",
"text-transform",
"text-decoration",
"letter-spacing",
"word-spacing",
"line-height",
"text-align",
"vertical-align",
"direction",
"column-count",
"column-gap",
"column-width"
],
background: [
"background-color",
"background-image",
"background-repeat",
"background-position",
"background-attachment",
"opacity"
],
box: [
"width",
"height",
"top",
"right",
"bottom",
"left",
"margin-top",
"margin-right",
"margin-bottom",
"margin-left",
"padding-top",
"padding-right",
"padding-bottom",
"padding-left",
"border-top-width",
"border-right-width",
"border-bottom-width",
"border-left-width",
"border-top-color",
"border-right-color",
"border-bottom-color",
"border-left-color",
"border-top-style",
"border-right-style",
"border-bottom-style",
"border-left-style",
"-moz-border-top-radius",
"-moz-border-right-radius",
"-moz-border-bottom-radius",
"-moz-border-left-radius",
"outline-top-width",
"outline-right-width",
"outline-bottom-width",
"outline-left-width",
"outline-top-color",
"outline-right-color",
"outline-bottom-color",
"outline-left-color",
"outline-top-style",
"outline-right-style",
"outline-bottom-style",
"outline-left-style"
],
layout: [
"position",
"display",
"visibility",
"z-index",
"overflow-x", // http://www.w3.org/TR/2002/WD-css3-box-20021024/#overflow
"overflow-y",
"overflow-clip",
"white-space",
"clip",
"float",
"clear",
"-moz-box-sizing"
],
other: [
"cursor",
"list-style-image",
"list-style-position",
"list-style-type",
"marker-offset",
"user-focus",
"user-select",
"user-modify",
"user-input"
]
};
获取所有样式的函数
updateComputedView: function(element)
{
var win = element.ownerDocument.defaultView;
var style = win.getComputedStyle(element, "");
var groups = [];
for (var groupName in styleGroups)
{
var title = $STR("StyleGroup-" + groupName);
var group = {title: title, props: []};
groups.push(group);
var props = styleGroups[groupName];
for (var i = 0; i < props.length; ++i)
{
var propName = props[i];
var propValue = stripUnits(rgbToHex(style.getPropertyValue(propName)));
if (propValue)
group.props.push({name: propName, value: propValue});
}
}
var result = this.template.computedTag.replace({groups: groups}, this.panelNode);
dispatch(this.fbListeners, 'onCSSRulesAdded', [this, result]);
}
function stripUnits(value)
{
// remove units from '0px', '0em' etc. leave non-zero units in-tact.
return value.replace(/(url\(.*?\)|[^0]\S*\s*)|0(%|em|ex|px|in|cm|mm|pt|pc)(\s|$)/gi, function(_, skip, remove, whitespace) {
return skip || ('0' + whitespace);
});
}
获取元素的所有样式,然后使用for循环获取所有样式并打印出来。因此,我认为getComputedSTyle是要使用的主要功能,在此之后,您可以使用以下工具逐个获取道具:
style.getPropertyValue(propName)
没有jQuery和IE支持,这就是我所能做的:
<!doctype html>
<html>
<head>
<meta charset = "utf-8">
<script type = "text/javascript">
Element.prototype.getStyles = function () {
var array = {};
var styles = window.getComputedStyle (this, null);
for (var i = 0; i < styles.length; i ++) {
var style = styles[i];
array[style] = styles[style];
}
return array; // return new Array (array, this.innerHTML); You can also return the HTMl content. I don't think its necessary
}
window.addEventListener ("load", function () {
var divId = document.getElementById ("divId");
var someClass = document.getElementsByClassName ("someClass");
var string = "";
var styles = divId.getStyles ();
for (var i in styles) {
string += i + ": " + styles[i] + "\n";
}
alert (string);
alert ("In-line style: Height ->" + styles["height"] + "\n" + "Out-line style: Width ->" + styles["width"])
alert ("HTML: " + divId.innerHTML);
// Same thing with the span element
}, false);
</script>
<style>
#divId {
clear: both;
padding: 3px;
border: 2px dotted #CCC;
font-size: 107%;
line-height: 130%;
width: 660px;
}
.someClass {
color: blue;
}
</style>
<title>Test</title>
</head>
<body>
<div id = "divId" style = "height: 100px">
<span class = "someClass">Some innerText</span>
</div>
</body>
</html>
Element.prototype.getStyles=函数(){
var数组={};
var styles=window.getComputedStyle(此为空);
对于(变量i=0;i”+样式[“高度”]+“\n”+“行外样式:宽度->”+样式[“宽度”])
警报(“HTML:+divId.innerHTML”);
//跨度元素也是如此
},假);
#迪维德{
明确:两者皆有;
填充:3倍;
边框:2个点#CCC;
字体大小:107%;
线高:130%;
宽度:660px;
}
.某个班级{
颜色:蓝色;
}
试验
一些内部文本
(不确定,您需要它-以防万一)
限制:使用,样式表应来自同一来源
function getElementChildrenAndStyles(selector) {
var html = $(selector).outerHTML();
selector = selector.split(",").map(function(subselector){
return subselector + "," + subselector + " *";
}).join(",");
elts = $(selector);
var rulesUsed = [];
// main part: walking through all declared style rules
// and checking, whether it is applied to some element
sheets = document.styleSheets;
for(var c = 0; c < sheets.length; c++) {
var rules = sheets[c].rules || sheets[c].cssRules;
for(var r = 0; r < rules.length; r++) {
var selectorText = rules[r].selectorText;
var matchedElts = $(selectorText);
for (var i = 0; i < elts.length; i++) {
if (matchedElts.index(elts[i]) != -1) {
rulesUsed.push(rules[r]); break;
}
}
}
}
var style = rulesUsed.map(function(cssRule){
if (cssRule.style) {
var cssText = cssRule.style.cssText.toLowerCase();
} else {
var cssText = cssRule.cssText;
}
// some beautifying of css
return cssText.replace(/(\{|;)\s+/g, "\$1\n ").replace(/\A\s+}/, "}");
// set indent for css here ^
}).join("\n");
return "<style>\n" + style + "\n</style>\n\n" + html;
}
您可以在下的样式标签中定义样式表。您可以将规则读入地图,然后通过选择或文本查找规则。所以按id:#id,按类:.className。您可以使用safari或chrome。根据kirilloid的回答,我为chrome创建了一个开发者工具扩展,其中包含用于捕获页面片段样式和标记的代码。分机位于中,并且处于启用状态。所有“作者样式”输出选项都使用该方法来迭代样式表
我认为你的标题应该是“如何获得所有样式…”,这也是类似的:你能告诉我你为什么需要这个吗?也许有一种简单的方法可以做到这一点。因为我正在将一个元素的html从一个文档复制到另一个窗口的文档(iFrame)。其他浏览器支持控制台吗?无论如何,并非所有浏览器都支持+1控制台,但您可以使用它作为替代。如果有一个类被分配给它,并且该类是在不同的css文件中定义的,该怎么办?谢谢,但如果它不支持所有浏览器,那么它将不适用于我。Console只是知道ucan的值,可以将其存储在变量中,并在任何地方使用它…我已经更新了我的问题,以防之前不清楚。谢谢你的回答。我试过你的回答。我已经用我尝试的结果更新了我的问题。我对您的回答做了一个小小的更改,就是$(选择器)。从$(选择器)。outerHTML()
中获取(0)。outerHTML
,这样我就不需要了。有一个愚蠢的错误--我已经修复了它(并在我的帖子中编辑了代码)。但我还有另一个问题:安全。在大多数浏览器中,用户无法通过DOM(即我使用的方式)从浏览器访问CSS
style.getPropertyValue(propName)
<!doctype html>
<html>
<head>
<meta charset = "utf-8">
<script type = "text/javascript">
Element.prototype.getStyles = function () {
var array = {};
var styles = window.getComputedStyle (this, null);
for (var i = 0; i < styles.length; i ++) {
var style = styles[i];
array[style] = styles[style];
}
return array; // return new Array (array, this.innerHTML); You can also return the HTMl content. I don't think its necessary
}
window.addEventListener ("load", function () {
var divId = document.getElementById ("divId");
var someClass = document.getElementsByClassName ("someClass");
var string = "";
var styles = divId.getStyles ();
for (var i in styles) {
string += i + ": " + styles[i] + "\n";
}
alert (string);
alert ("In-line style: Height ->" + styles["height"] + "\n" + "Out-line style: Width ->" + styles["width"])
alert ("HTML: " + divId.innerHTML);
// Same thing with the span element
}, false);
</script>
<style>
#divId {
clear: both;
padding: 3px;
border: 2px dotted #CCC;
font-size: 107%;
line-height: 130%;
width: 660px;
}
.someClass {
color: blue;
}
</style>
<title>Test</title>
</head>
<body>
<div id = "divId" style = "height: 100px">
<span class = "someClass">Some innerText</span>
</div>
</body>
</html>
function getElementChildrenAndStyles(selector) {
var html = $(selector).outerHTML();
selector = selector.split(",").map(function(subselector){
return subselector + "," + subselector + " *";
}).join(",");
elts = $(selector);
var rulesUsed = [];
// main part: walking through all declared style rules
// and checking, whether it is applied to some element
sheets = document.styleSheets;
for(var c = 0; c < sheets.length; c++) {
var rules = sheets[c].rules || sheets[c].cssRules;
for(var r = 0; r < rules.length; r++) {
var selectorText = rules[r].selectorText;
var matchedElts = $(selectorText);
for (var i = 0; i < elts.length; i++) {
if (matchedElts.index(elts[i]) != -1) {
rulesUsed.push(rules[r]); break;
}
}
}
}
var style = rulesUsed.map(function(cssRule){
if (cssRule.style) {
var cssText = cssRule.style.cssText.toLowerCase();
} else {
var cssText = cssRule.cssText;
}
// some beautifying of css
return cssText.replace(/(\{|;)\s+/g, "\$1\n ").replace(/\A\s+}/, "}");
// set indent for css here ^
}).join("\n");
return "<style>\n" + style + "\n</style>\n\n" + html;
}
getElementChildrenAndStyles("#divId");