Javascript 如何避免过滤器选择器JS函数的内联onclick属性
我试图找出如何避免内联JS编辑,因为内容安全头策略阻止了它。我的项目类似于W3学校过滤器元素示例。想知道如何在不使用onclick属性的情况下使用JS脚本 www.w3schools.com/howto/tryit.asp?filename=tryhow\u js\u filter\u elements filter.htmlJavascript 如何避免过滤器选择器JS函数的内联onclick属性,javascript,jquery,Javascript,Jquery,我试图找出如何避免内联JS编辑,因为内容安全头策略阻止了它。我的项目类似于W3学校过滤器元素示例。想知道如何在不使用onclick属性的情况下使用JS脚本 www.w3schools.com/howto/tryit.asp?filename=tryhow\u js\u filter\u elements filter.html <!DOCTYPE html> <html> <head> <title> test</title>
<!DOCTYPE html>
<html>
<head>
<title> test</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="filter.css"/>
</head>
<body>
<h2>Filter DIV Elements</h2>
<div id="myBtnContainer">
<button class="btn active" onclick="filterSelection('all')"> Show all</button>
<button class="btn" onclick="filterSelection('cars')"> Cars</button>
<button class="btn" onclick="filterSelection('animals')"> Animals</button>
<button class="btn" onclick="filterSelection('fruits')"> Fruits</button>
<button class="btn" onclick="filterSelection('colors')"> Colors</button>
</div>
<div class="container">
<div class="column cars">BMW</div>
<div class="column colors fruits">Orange</div>
<div class="column cars">Volvo</div>
<div class="column colors">Red</div>
<div class="column cars animals">Mustang</div>
<div class="column colors">Blue</div>
<div class="column animals">Cat</div>
<div class="column animals">Dog</div>
<div class="column fruits">Melon</div>
<div class="column fruits animals">Kiwi</div>
<div class="column fruits">Banana</div>
<div class="column fruits">Lemon</div>
<div class="column animals">Cow</div>
</div>
<script src="filter_js.js"></script>
</body>
</html>
filter_js.js
filterSelection("all")
function filterSelection(c) {
var x, i;
x = document.getElementsByClassName("column");
if (c == "all") c = "";
for (i = 0; i < x.length; i++) {
w3RemoveClass(x[i], "show");
if (x[i].className.indexOf(c) > -1) w3AddClass(x[i], "show");
}
}
function w3AddClass(element, name) {
var i, arr1, arr2;
arr1 = element.className.split(" ");
arr2 = name.split(" ");
for (i = 0; i < arr2.length; i++) {
if (arr1.indexOf(arr2[i]) == -1) {element.className += " " + arr2[i];}
}
}
function w3RemoveClass(element, name) {
var i, arr1, arr2;
arr1 = element.className.split(" ");
arr2 = name.split(" ");
for (i = 0; i < arr2.length; i++) {
while (arr1.indexOf(arr2[i]) > -1) {
arr1.splice(arr1.indexOf(arr2[i]), 1);
}
}
element.className = arr1.join(" ");
}
// Add active class to the current button (highlight it)
var btnContainer = document.getElementById("myBtnContainer");
var btns = btnContainer.getElementsByClassName("btn");
for (var i = 0; i < btns.length; i++) {
btns[i].addEventListener("click", function(){
var current = document.getElementsByClassName("active");
current[0].className = current[0].className.replace(" active", "");
this.className += " active";
});
}
过滤器选择(“全部”)
函数过滤器选择(c){
变量x,i;
x=document.getElementsByClassName(“列”);
如果(c==“全部”)c=“”;
对于(i=0;i-1)w3AddClass(x[i],“show”);
}
}
函数w3AddClass(元素、名称){
变量i,arr1,arr2;
arr1=element.className.split(“”);
arr2=name.split(“”);
对于(i=0;i-1){
arr1.拼接(arr1.indexOf(arr2[i]),1);
}
}
element.className=arr1.join(“”);
}
//将活动类添加到当前按钮(高亮显示)
var btnContainer=document.getElementById(“myBtnContainer”);
var btns=btnContainer.getElementsByClassName(“btn”);
对于(变量i=0;i
不是完美的,但它可以工作。函数filterSelection()只处理“column”元素的隐藏/显示
在btnContainer的eventlistener中,我可以通过按钮的名称获取类型
var filterSelection=type=>{
var current=document.querySelectorAll('.show');
current.forEach(elm=>elm.classList.remove('show');
如果(类型=='all')类型='column';
var elmToShow=document.querySelectorAll(`.${type}`);
elmToShow.forEach(elm=>elm.classList.add('show');
};
document.addEventListener('DOMContentLoaded',e=>{
var btnContainer=document.getElementById(“myBtnContainer”);
var buttons=document.queryselectoral('.btn');
btnContainer.addEventListener('click',e=>{
如果(e.target.nodeName=='BUTTON'){
forEach(elm=>{elm.classList.remove('active')});
e、 target.classList.add('active');
var type=e.target.name;
过滤器选择(类型);
}
});
过滤器选择(“全部”)
});代码>
.column{
浮动:左;
背景色:#2196F3;
颜色:#ffffff;
宽度:100px;
线高:100px;
文本对齐:居中;
保证金:2倍;
显示:无;
}
.表演{
显示:块;
}
.集装箱{
边缘顶部:20px;
溢出:隐藏;
}
/*设计按钮的样式*/
.btn{
边界:无;
大纲:无;
填充:12px 16px;
背景色:#f1f1;
光标:指针;
}
.btn:悬停{
背景色:#ddd;
}
.btn.active{
背景色:#666;
颜色:白色;
}
测试
过滤元件
全部展示
汽车
动物
水果
颜色
宝马
橙色
沃尔沃汽车
红色
野马
蓝色
猫
狗
甜瓜
几维鸟
香蕉
柠檬
母牛
测试
-->
<style>
.column {
float: left;
background-color: #2196F3;
color: #ffffff;
width: 100px;
line-height: 100px;
text-align: center;
margin: 2px;
/* display: none; */
}
.filters {
display: none;
}
.show {
display: block;
}
.container {
margin-top: 20px;
overflow: hidden;
}
/* Style the buttons */
.btn {
border: none;
outline: none;
padding: 12px 16px;
background-color: #f1f1f1;
cursor: pointer;
}
.btn:hover {
background-color: #ddd;
}
.btn.active {
background-color: #2196F3;
color: white;
}
</style>
.栏目{
浮动:左;
背景色:#2196F3;
颜色:#ffffff;
宽度:100px;
线高:100px;
文本对齐:居中;
保证金:2倍;
/*显示:无*/
}
.过滤器{
显示:无;
}
.表演{
显示:块;
}
.集装箱{
边缘顶部:20px;
溢出:隐藏;
}
/*设计按钮的样式*/
.btn{
边界:无;
大纲:无;
填充:12px 16px;
背景色:#f1f1;
光标:指针;
}
.btn:悬停{
背景色:#ddd;
}
.btn.active{
背景色:#2196F3;
颜色:白色;
}
过滤器DIV元素
全部展示
汽车
动物
水果
颜色
宝马
沃尔沃汽车
野马
红色
橙色
蓝色
野马
猫
狗
几维鸟
母牛
甜瓜
香蕉
柠檬
几维鸟
const section=document.querySelector(“.filterssection”);
const btns=document.queryselectoral(“.btn”);
const rows=document.queryselectoral(“.filters”);
rows.forEach(row=>{
row.classList.add('show');
})
第节。添加事件列表器(“单击”,函数(e){
console.log(e.target.dataset.id);
const id=e.target.dataset.id;
如果(id){
btn.forEach((btn)=>{
btn.classList.remove(“活动”);
e、 target.classList.add(“活动”);
});
rows.forEach((row)=>{
行。类列表。删除(“显示”);
});
如果(id=='all'){
//rows.style.display='block';
rows.forEach(row=>{
row.classList.add('show');
})
}否则{
常量元素=document.getElementById(id);
元素。类列表。添加(“显示”);
控制台日志(元素);
}
}
});
您可以(也应该)使用而不是内联处理程序。例如:
const btncontainer=document.querySelector(“#myBtnContainer”);
const containerell=document.querySelector('.container');
btnContaineerl.addEventListener('click',ev
<!DOCTYPE html>
<style>
.column {
float: left;
background-color: #2196F3;
color: #ffffff;
width: 100px;
line-height: 100px;
text-align: center;
margin: 2px;
/* display: none; */
}
.filters {
display: none;
}
.show {
display: block;
}
.container {
margin-top: 20px;
overflow: hidden;
}
/* Style the buttons */
.btn {
border: none;
outline: none;
padding: 12px 16px;
background-color: #f1f1f1;
cursor: pointer;
}
.btn:hover {
background-color: #ddd;
}
.btn.active {
background-color: #2196F3;
color: white;
}
</style>
<h2>Filter DIV Elements</h2>
<div class="filterSection">
<div id="myBtnContainer">
<button class="btn active" data-id="all"> Show all</button>
<button class="btn" data-id="cars"> Cars</button>
<button class="btn" data-id="animals"> Animals</button>
<button class="btn" data-id="fruits"> Fruits</button>
<button class="btn" data-id="colors"> Colors</button>
</div>
<div class="container">
<div class="filters show" id="cars">
<div class="column">BMW</div>
<div class="column">Volvo</div>
<div class="column">Mustang</div>
</div>
<div class="filters" id="colors">
<div class="column">Red</div>
<div class="column">Orange</div>
<div class="column">blue</div>
</div>
<div class="filters" id="animals">
<div class="column">Mustang</div>
<div class="column">Cat</div>
<div class="column">Dog</div>
<div class="column">Kiwi</div>
<div class="column animals">Cow</div>
</div>
<div class="filters" id="fruits">
<div class="column">Melon</div>
<div class="column">Banana</div>
<div class="column">Lemon</div>
<div class="column">Kiwi</div>
</div>
</div>
</div>
const section = document.querySelector(".filterSection");
const btns = document.querySelectorAll(".btn");
const rows = document.querySelectorAll(".filters");
rows.forEach(row => {
row.classList.add('show');
})
section.addEventListener("click", function(e) {
console.log(e.target.dataset.id);
const id = e.target.dataset.id;
if (id) {
btns.forEach((btn) => {
btn.classList.remove("active");
e.target.classList.add("active");
});
rows.forEach((row) => {
row.classList.remove("show");
});
if (id == 'all') {
// rows.style.display = 'block';
rows.forEach(row => {
row.classList.add('show');
})
} else {
const element = document.getElementById(id);
element.classList.add("show");
console.log(element);
}
}
});