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[英]How can I use Ruby to load the HTML source code of a webpage to a string, and then parse it to get the inner HTML of the <title> tag?
[英]How can I parse inner HTML by class name where html is assigned to a string variable in Angular 7/Typescript
如何通過 class 名稱獲取 span 的內部文本? 這里的 adr_address 變量不是一個 DOM 元素,而是一個字符串。
var adr_address = '<span class="street-address">12 Stephenson Rd</span>, <span class="locality">Summertown</span>, <span class="region">TN</span> <span class="postal-code">38483-7005</span>, <span class="country-name">USA</span>';
var street-address = ??;
var locality = ??;
var region = ??;
var postal-code = ??;
var country-name = ??
console.log(street-address);
console.log(locality);
console.log(region);
console.log(postal-code);
console.log(country-name);
output 必須是這樣的:
斯蒂芬森路 12 號
薩默敦
德克薩斯州
38483-7005
美國
您可以使用 DOM 解析器
const parser = new DOMParser();
const doc = parser.parseFromString(htmlString, 'text/html');
__ now you can use query selectors on this doc __
您可以使用@ViewChild,例如:
html:
<span #st class="street-address">12 Stephenson Rd</span>
ts:
@ViewChild('st') st;
ngAfterViewInit(): void {
console.log(this.st.nativeElement.innerHTML);
}
這最終對我有用:
var adr_address = '<span class="street-address">12 Stephenson Rd</span>, <span class="locality">Summertown</span>, <span class="region">TN</span> <span class="postal-code">38483-7005</span>, <span class="country-name">USA</span>';
const parser = new DOMParser();
const doc = parser.parseFromString(adr_address, 'text/html');
var locality = doc.getElementsByClassName('locality')[0].innerHTML.toString();
var street-address = doc.getElementsByClassName('street-address')[0].innerHTML.toString();
var region = doc.getElementsByClassName('region')[0].innerHTML.toString();
var postal-code = doc.getElementsByClassName('postal-code')[0].innerHTML.toString();
您可以使用 Jquery 和 Javascript:
var elem=$.parseHTML('<span class="street-address">12 Stephenson Rd</span>, <span class="locality">Summertown</span>, <span class="region">TN</span> <span class="postal-code">38483-7005</span>, <span class="country-name">USA</span>')
$.map( elem, function( el,n ) {
if($(el).context.localName == 'span')
{
console.log($($(el)[0]).text())
}
});
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