javascript - The scroll bar covers the hover popup layer?

After adding the scroll bar, the scroll bar covers the pop-up layer on the right side and cannot be seen. After removing the scroll bar, the content can be seen. How should this problem be solved? (Unable to pop up) (You can see the pop-up layer) Please tell me how to solve it. I have to add a scrol...

曾经蜡笔没有小新 2017-05-19 10:47:52 0  4  801

javascript - Why can an array with 3 object elements only access the first element?

There are three elements in the status expansion. Status[0] is the object element I pushed into it, and status[1] and status[2] are all kinds of undefined. Why? The following is the complete code. After trying it several times, I think it has something to do with the variable scope, but the array va...

PHP中文网 2017-05-19 10:23:15 0  4  600

javascript - Vue deletes array elements causing remaining elements not to be re-rendered

I recently used Vue in a project, but during the development process I discovered that when I deleted an element in the array, the elements following the element were not re-rendered. The html code is as follows: There are two components: one is the Main component, used to contain all content contai...

女神的闺蜜爱上我 2017-06-12 09:29:02 0  2  1121

javascript - How to slide the screen on the mobile phone to get the distance from the top of a certain element? At the same time, can this value be referenced by other functions?

As the title says, what I want to achieve is to slide the mobile phone screen. When an element is a certain value (for example, 200px) from the top, click the pop-up button on the screen, and the position of the pop-up layer will be 200px from the top. {Code...} Want This effect is achieved, the val...

PHPz 2017-05-18 11:02:18 0  2  588

HTML video element control does not display

I created a video element and set the controls attribute to true, but the controls are not showing (even on hover) if(!this._player){this._player=document.createElement('video');}this._player. controls=true;this._player.src=xxxxx; Also set the width of the video element to 100% and the position of t...

P粉788765679 2023-08-18 12:54:43 0  1  599

Where can I download the material in the video? Pictures, etc.

Where is the material in the video? Pictures, etc.

小队长 2017-06-12 14:55:39 0  1  1273

javascript - How to use angular's foreach to operate only on specific elements instead of all

How does angular's foreach operate only on specific elements instead of all

巴扎黑 2017-05-19 10:23:42 0  1  460

javascript - Why does react need the key attribute to identify elements, but vue does not?

Why does React need the key attribute to identify elements, but Vue does not? What method does Vue use to identify it? {code...}

三叔 2017-06-26 10:55:21 0  3  828

CSS selector (if the element has no specific parent)

If an element doesn't have a certain parent, I want to change the style of that element without having to overwrite it to its original value. See https://jsfiddle.net/xqb2z8tc/ The problem with the above code is that since the mixin is used more, it generates a lot of css, so we want to rewrite it. ...

P粉092778585 2024-01-16 20:48:10 0  1  517

javascript - One array taking random elements from another array

There is an array a=[4,19,23,44,56,1], create a new array b, and b randomly selects one element at a time from a until it is exhausted. Implemented in JavaScript

PHP中文网 2017-05-19 10:31:39 0  7  716

Does empty element mean that there are no attributes inside the tag?

Does empty element mean that there are no attributes inside the tag?

牧鹰 2018-12-10 23:00:25 0  1  1083

javascript - Assign the obtained text element to var x; why can't it be judged whether the input text is empty?

Assign the obtained text element to var x; why does it not take effect to determine whether the input text is empty? document.getElementById("demo").innerHTML; Is the element obtained a string or something else? It is a string. Why does using x.length to determine the length of a string no...

我想大声告诉你 2017-05-18 11:00:49 0  4  552

javascript - After binding the window.resize event to an element, the previously set cursor attribute becomes invalid.

(Under IE) I bound a click event to an img element to set the cursor:url('xxx') style of this image. If I don't bind the window.resize event, I can just click the img element. Display different cursor:url('xxx') and the mouse will display the corresponding icon, but...

某草草 2017-05-19 10:36:14 0  1  906

PHP - Traversing object fails if element's value is not of type string

I have a simple question, but no matter what, I can't figure out what's going on. I have a JSON string that looks like this: {"network_title":"Network","class_title":"Class","grades":[{"number":"Pre-K",&quo

P粉769045426 2023-07-30 18:07:04 0  1  535

javascript - why two elements are needed to create a scrolling effect with transform

I read other people's articles why it is necessary to use two layers of elements to perform two animations to achieve the parabolic effect of a small ball, instead of just writing one element <div class="ball"></div>? Then use transform to do it Modification of ...

滿天的星座 2017-05-19 10:18:02 0  2  823

Why can't jQuery or DOM methods like getElementById locate elements?

What are the possible reasons why document.getElementById, $("#id") or any other DOM method/jQuery selector cannot find the element? Example issues include: jQuery silently fails to bind event handlers jQuery "getter" methods (.val(), .html(), .text()) return undefined Standard D...

P粉720716934 2023-10-15 15:40:06 0  2  633

CSS row class makes some elements go out of frame, while they should be static and fixed to the bottom of the display

My page currently looks like this. After adding the row class so that the two elements are next to each other, the bottom navigation bar is pushed down to where I have to scroll. Here you can see another page without row elements, where the navigation links are perfectly stuck at the bottom of the d...

P粉156415696 2024-04-03 18:48:12 0  1  413

Why can't jQuery or getElementById locate the element?

What are the possible reasons why document.getElementById, $("#id") or any other DOM method/jQuery selector cannot find the element? Example issues include: jQuery silently fails to bind event handlers jQuery "getter" methods (.val(), >.html(), .text()) return undefined Standa...

P粉575055974 2023-10-15 14:53:18 0  2  747

Why does the span element have width and height attributes after setting float in css?

Why does the span element have width and height attributes after setting float in css?

P粉301974093 2023-06-02 22:34:48 0  3  1965

Handle the case where there are no input elements in the DOM when selecting files using the Cypress method

When clicking the upload button, use the method below to open the file browser. As far as I know, no element is added to the DOM unless you explicitly attach it to the DOM element. constinputEl=document.createElement("input");inputEl.type="file";inputEl.multiple=true;inputEl.clic...

P粉697408921 2023-09-05 22:32:49 0  1  460