我有一个带有HTML代码的变量:
let htmlDocument = '<div id="buildings-wrapper"> \
<div id="building-info"> \
<h2><span class="field-content">Britney Spears' House</span></h2> \
<div class="building-field"> \
<div class="field-content">9999 Hollywood Blvd</div> \
</div> \
<div class="building-field"> \
<div class="field-content">Building Hours: Mon. 07:00-23:00 Tue.-Fri. 06:30-22:00, Sat. 07:30-18:00, Sun. 12:00-18:00 Holidays - Closed</div> \
</div> \
<div class="building-field"> \
<div class="field-content"><a href="http://www.britneyspears.com">Locate on the stars map</a></div> \
</div> \
</div> \
<div id="building-image"> \
<div class="field-content"><img src="../../../../ssc.adm.britneyspears.com/classroomservices/image/viewimage?userEvent=ShowBuildingImage&buildingID=britneyspears" alt="Image of BritneySpears"></div> \
</div> \
</div>';
我想遍历变量并将HTML的这一部分存储在一个单独的变量中:
<div class="field-content">9999 Hollywood Blvd</div>
这是我到目前为止所做的:
public traverseHTML(htmlDocument: any): any {
let htmlBlock: any;
let divs: any = htmlDocument.getElementsByTagName('div');
for (var i = 0; i < divs.length; i++) {
if (divs[i].getAttribute("id") == "field-content") {
htmlBlock = divs[i];
}
}
return htmlBlock;
}
我确信我的功能有各种各样的问题,但我无法找到它们,因为我甚至无法超越第二行。我收到一条错误,说htmlDocument.getElementsByTagName
不是函数。如何通过div迭代HTML?
请注意,由于项目规范,我无法使用JQuery。
编辑:
当我尝试document is not defined
时,我得到document.createElement('div')
,当我尝试创建DOMParser时未定义DOMParser。我是否错误地设置了课程?这是整个班级的代码:
import parse5 = require('parse5');
import {ASTNode} from 'parse5';
export default class DSController {
//private parser: DOMParser;
constructor() {
//this.parser = new DOMParser();
}
public traverseHTML(htmlDocument: any): any {
let parser = new DOMParser();
let parsed: any = parser.parseFromString(htmlDocument, "text/html");
let selectParsed: any = parsed.querySelectorAll('field-content')[1];
console.log(selectParsed);
return selectParsed;
/* let element = document.createElement("div");
element.innerHTML = htmlDocument;
console.log(element.querySelectorAll(".field-content")[1]); // <div class="field-content">9999 Hollywood Blvd</div>
*/
}
public parseHTML(): any {
//let document: parse5.ASTNode;
return;
}
}
答案 0 :(得分:1)
您可以创建一个元素,然后将此字符串作为html插入其中 然后,您可以查询此元素以查找您要查找的内容:
let htmlDocument = '<div id="buildings-wrapper"> \
<div id="building-info"> \
<h2><span class="field-content">Britney Spears House</span></h2> \
<div class="building-field"> \
<div class="field-content">9999 Hollywood Blvd</div> \
</div> \
<div class="building-field"> \
<div class="field-content">Building Hours: Mon. 07:00-23:00 Tue.-Fri. 06:30-22:00, Sat. 07:30-18:00, Sun. 12:00-18:00 Holidays - Closed</div> \
</div> \
<div class="building-field"> \
<div class="field-content"><a href="http://www.britneyspears.com">Locate on the stars map</a></div> \
</div> \
</div> \
<div id="building-image"> \
<div class="field-content"><img src="../../../../ssc.adm.britneyspears.com/classroomservices/image/viewimage?userEvent=ShowBuildingImage&buildingID=britneyspears" alt="Image of BritneySpears"></div> \
</div> \
</div>';
let element = document.createElement("div");
element.innerHTML = htmlDocument;
console.log(element.querySelectorAll(".field-content")[1]); // <div class="field-content">9999 Hollywood Blvd</div>
答案 1 :(得分:1)
您还可以使用DOMParser
:
new DOMParser().parseFromString(htmlDocument, "text/html")
.querySelectorAll('.field_content)[1]