我正在尝试编写一个程序,当我在鼠标上选择 div 内的文本时,我想突出显示该 div 中所选文本的所有出现,到目前为止我已经做了什么
但这仅适用于静态即硬编码单词,如演示中所示
var text = $('div').text().replace(/Ipsum/g,"<span class='red'>Ipsum</span>");
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这里 Ipsum 是硬编码的,它工作得很好。我想做的是用动态选择的文本替换 ipsum ,但失败了。我已经添加了演示,其中包含我到目前为止所达到的内容,代码如下所示 演示 在 mouseup 上动态获取选定的文本
<div id="div">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into …Run Code Online (Sandbox Code Playgroud) 我想废弃网页的一些信息.它使用表格布局结构.
我想在嵌套表格布局中提取第三个表格,其中包含一系列嵌套表格.每个发布一个结果.但代码不起作用
include('simple_html_dom.php');
$url = 'http://exams.keralauniversity.ac.in/Login/index.php?reslt=1';
$html = file_get_contents($url);
$result =$html->find("table", 2);
echo $result;
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我使用Curl来提取网站,但问题是它的标签是乱序的,因此无法使用简单的dom元素提取它.
function curl($url) {
$ch = curl_init(); // Initialising cURL
curl_setopt($ch, CURLOPT_URL,$url); // Setting cURL's URL option with the $url variable passed into the function
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); // Setting cURL's option to return the webpage data
$data = curl_exec($ch); // Executing the cURL request and assigning the returned data to the $data variable
curl_close($ch); // Closing cURL
return $data; // Returning the data from the …Run Code Online (Sandbox Code Playgroud) export function valUPM() {
return (req: Request, _res: Response, next: NextFunction) => {
req
.checkBody(
"paymentType",
`paymentType: ${messages.getFromSession(req, "mustNotBeEmpty")}`
)
.notEmpty();
if (req.body.paymentType === "USP") {
req
.checkBody(
"storeId",
`storeId: ${messages.getFromSession(req, "mustNotBeEmpty")}`
)
.notEmpty();
} else if (req.body.paymentType === "CC") {
if (req.body.register) {
req
.checkBody(
"register",
`register: ${messages.getFromSession(req, "mustBeBoolean")}`
)
.isBoolean();
} else {
req
.checkBody(
"register",
`register: ${messages.getFromSession(req, "mustNotBeEmpty")}`
)
.notEmpty();
}
}
req.getValidationResult().then(errs => {
if (errs.isEmpty()) {
return next();
}
const error = new BFFError(
400, …Run Code Online (Sandbox Code Playgroud) <ul class="nav flex-column">
<ng-container *ngFor="let cat of Category" >
<span>{{change}}</span>
<li class="nav-item">
<a class="nav-link " [class.bg]="temp===cat" (click)="clicked(cat)" href="#">{{cat}}</a>
</li>
</ng-container>
</ul>
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我有一个侧边栏,我希望默认显示带有活动类的第一个 li 锚标记,之后当我单击其他 li 时,我需要更改。我已经实现了后面的部分,但是如何设置默认类
编辑:-
<li class="nav-item" [class.bg]="change === true && i==0 ">
<a class="nav-link " [class.bg]="temp===cat" (click)="clicked(cat)" href="#">{{cat}}</a>
</li>
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我使用名为“change”的变量来检查菜单是否未被单击,并按照建议使用索引变量 iPenggy来确定第一个菜单项并且代码有效
但我发现了另一件事,如果有人能帮助我理解那就太好了
<a class="nav-link " [class.bg]="temp===cat" [class.bg]="change === true && i==0 " (click)="clicked(cat)" href="#">{{cat}}</a>
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上面的代码可以工作,但是如果更改 [class.bg ] 语句的顺序,它就会停止工作 {{cat}} 上面的代码不起作用,为什么这是
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