使用JavaScript获取元数据 [英] Get metadata using javascript
问题描述
您的帮助将大大AP preciated
我有以下的code:这是假设从网站获得的元标记:
函数计算(){
//这得到标题:
g_title =(''+ document.title时+'');
g_title_count =(''+ document.title.split('')。长度+'');
g_title_length =(''+ document.title.length +'')
//这将检查所有的元标记:
g_metadata = document.getElementsByTagName(元)[我]
g_keywords =测试;
如果(typeof运算g_metadata!='不确定'){
如果(g_metadata){
变种I = 0;
对于(i = 0; I< = 10;我++){
如果(g_metadata.name =='关键词'){
g_keywords [I] =(g_metadata.name [I] + g_metadata.content [I]);
}
}
}
}
}
按照上面的code指定此值返回当前的测试:
document.form1.g_keywords.value = g_keywords
不过,我需要它来捕捉关键字元标记,描述和标题。
<标题>试验1 LT; /标题>
< META NAME =关键词内容=测试2/>
< META NAME =说明内容=TEST3/>
,然后将其写入到一个表单:
< textarea的名字=g_keywordsID =g_keywordsCOLS =80行=5的onchange =计算(this.form1)>< / textarea的>
目前,它的工作原理为标题
,但不要让< META NAME =关键词内容=>
标签
如果(g_metadata.name =='关键词'){
g_keywords [I] =(g_metadata.name [I] + g_metadata.content [I]);
}
我已经创造了上述尝试过,但不知道如何执行它...
请帮忙 - 谢谢
//收集所有关键字
g_metadata = document.getElementsByTagName(元);
g_keywords = []; //应的阵列
VAR LEN = g_metadata.length;
对于(VAR I = 0; I< LEN,我++){
如果(g_metadata [我]。名称=='关键词'){
g_keywords = g_metadata [I] .content.split(,);
}
}
我觉得应该是只有一个关键字<&荟萃GT;
标签,所有的关键字都列有以逗号分隔。
[演示]
Your help would be greatly appreciated
I have the following code: It is suppose to get the metatags from a website:
function calculate() {
// This gets the title:
g_title = ('' + document.title + '');
g_title_count = ('' + document.title.split(' ').length + '');
g_title_length = ('' + document.title.length + '')
// This checks all the MetaTags:
g_metadata = document.getElementsByTagName("meta")[i];
g_keywords = "test";
if (typeof g_metadata != 'undefined') {
if (g_metadata) {
var i = 0;
for (i = 0; i <= 10; i++) {
if (g_metadata.name == 'keywords') {
g_keywords[i] = (g_metadata.name[i] + g_metadata.content[i]);
}
}
}
}
}
This value currently returns "test" as specified in the code above:
document.form1.g_keywords.value = g_keywords
However I need it to capture the keywords metatag, description and title.
<title>Test 1</title>
<meta name="keywords"content="test2" />
<meta name="description" content="test3" />
and then write it to a form:
<textarea name="g_keywords" id="g_keywords" cols="80" rows="5" onchange="calculate(this.form1)"></textarea>
It currently works for the Title
but not to get the <meta name="keywords" content="" >
tag
if (g_metadata.name == 'keywords') {
g_keywords[i] = (g_metadata.name[i] + g_metadata.content[i]);
}
I have tried it by creating the above but are not sure how to execute it...
Please help - Thanks
// Collect all keywords
g_metadata = document.getElementsByTagName("meta");
g_keywords = []; // should be an array
var len = g_metadata.length;
for (var i = 0; i < len; i++) {
if (g_metadata[i].name == 'keywords') {
g_keywords = g_metadata[i].content.split(",");
}
}
I think there supposed to be only one keyword <meta>
tag, and all the keywords are listed there separated by comma.
[Demo]
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