我在Web上看到了一些使用以下语句的代码
if ($($(this)).hasClass("footer_default")) {
$('#abc')
.appendTo($(this))
.toolbar({position: "fixed"});
}
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有什么用途,$($(this))为什么这里有必要?
我正在尝试将“顶部文本”与屏幕顶部对齐,但找不到方法。“顶部文本”需要在 iphone 屏幕的“缺口”附近对齐。
我附上了“顶部文本”当前所在位置的屏幕截图,需要移至顶部
struct ContentView: View {
//var newColor : [String: Double] = setColor(red:247, green:186, blue:161)
var body: some View {
ZStack {
VStack(spacing: 0) {
HStack {
Text("Top Text[![enter image description here][1]][1]")
.fontWeight(.light)
.multilineTextAlignment(.center)
.frame(minWidth: 0, maxWidth: .infinity, minHeight: 100)
.font(.body)
.padding()
}
.offset(y: 0)
.frame(minWidth: 0, maxHeight: 400, alignment: .topLeading)
VStack {
Text("Sign in with Facebook")
.fontWeight(.light)
.font(.title)
.frame(minWidth: 0, maxWidth: .infinity, maxHeight: 50)
.padding(EdgeInsets.init(top: 0, leading: 0, bottom: 0, trailing: 0))
Text("Sign in with Google")
.fontWeight(.light) …Run Code Online (Sandbox Code Playgroud) 在资产部分,有文件.js和.js.liquid名称.
2之间有什么区别,如果我想将js文件包含到主题中,我应该使用哪一个?
这是在.js.liquid文件中.我想构造一个由液体变量组成的字符串.当我将这个字符串附加到DOM元素中时,它似乎没有显示出来.
var someString = '';
{%for line in order.line_items%}
someString += 'q='+{{line.quantity}}+'&p='+{{line.product.id}}+'&pp='+{{line.price}}+'&w='+{{line.grams}}+'&i='+{{line.product.featured_image|product_img_url|url_param_escape}}+'&n='+{{line.product.title|url_param_escape}}+'&';
{%endfor%}
$('body').append(someString);
Run Code Online (Sandbox Code Playgroud) 当我在此处对子元素执行click事件时,为什么会产生错误?当我附加onClick={this.handleChangeCity} in the“ citys”类时,它也产生了一个错误
我很想听听你如何解决这个问题。
Eslint错误:[eslint]带有单击处理程序的可见的非交互式元素必须至少具有一个键盘侦听器。(jsx-a11y / click-events-have-key-events)[eslint]具有事件处理程序的静态HTML元素需要一个角色。(jsx-a11y / no-static-element-interactions)(JSX属性)onClick:任意
import React from "react";
import ReactDOM from "react-dom";
import jsonData from "./navigation.json";
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
loading: true,
cities : jsonData.cities,
currentCity: jsonData.cities[0].label,
};
this.handleChangeCity = this.handleChangeCity.bind(this);
}
createCities(){
//let cityList = [];
let children = [];
let cityClass = 'oneCity';
let activeCityClass = `${cityClass} active`;
this.state.cities.forEach((city, index) =>{
let divClass = index ? cityClass : activeCityClass;
children.push(<div
onClick={this.handleChangeCity} ===> error …Run Code Online (Sandbox Code Playgroud) 我正在尝试创建子视图并收到此错误:
SignInButtons.swift:54:34: error: cannot convert value of type 'String' to expected argument type 'Binding<String>'
signInUrl: "http://www.apple.com",
^~~~~~~~~~~~~~~~~~~~~~struct
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我也得到了这个:
'ContentView' initializer is inaccessible due to 'private' protection level
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====================
ContentView: View {
import SwiftUI
struct ContentView: View {
//our color palette
let colorWheel : [String: Color] = [
"darkOrange" : Color.init(hex: "F1615D"),
"mediumOrange" : Color.init(hex: "FF8761"),
"darkYellow" : Color.init(hex: "FFC575"),
"lightYellow" : Color.init(hex: "F1FAC6"),
"brightAqua" : Color.init(hex: "79E6E3"),
"lightAqua" : Color.init(hex: "a8e6cf"),
"limeGreen" : Color.init(hex: "dcedc1"),
"brightPeach" : Color.init(hex: "ff8b94"),
"mediumPeach" …Run Code Online (Sandbox Code Playgroud) 我已经编写了一个jQuery插件作为表单元素,我希望在整个mysite中重用它.
(function ( $ ) {
$.fn.create = function() {
var form = '<div id="form" class="container">';
form += '<div>User Login</div>';
form += '<form action="/create" method="post">';
form += '<input type="text" name="name" placeholder="name">';
form += '<input type="email" name="email" placeholder="email">';
form += '<button type="submit">Login</button>';
form += '</form>';
form += '</div>';
return this.append(form);
};
}( jQuery ));
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在HTML视图中,
<div id="#newForm"></div>
<script>
$(document).ready(function(){
$("#newForm").create();
});
</script>
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但是,表单不会被渲染到 #newForm