我编写了下面的代码来获取带有文本和按钮的阴影DOM,文本和按钮都已正确设置样式,而主机背景已经以奇怪的方式设置了样式,
代码是:
// Create a new object based of the HTMLElement prototype
var fonixDiv = Object.create(HTMLElement.prototype);
// Set up the element.
fonixDiv.createdCallback = function() {
// Create a Shadow Root
var shadow = this.createShadowRoot();
shadow.innerHTML = '\
<style>\
:host { \
border: 2px dashed red;\
text-align: left;\
font-size: 28px;\
background: blue;\
}\
h3 { color: red; }\
button { color: green; }\
</style>\
<h3>Shadow DOM</h3>\
<button id="d">click</button>\
';
shadow.children.d.addEventListener('click', function(e) {
this.textContent = "you clicked me :(";
shadow.children[1].textContent="Shadow DOM content changed";
host.style.background = "green";
alert("All: button, text and host should be change");
});
};
输出在附件中。
任何帮助。
答案 0 :(得分:0)
我能够使用css文件解决问题:
<。> .html文件是:<fonix-div></fonix-div>
<div id="host1"></div>
<。> .js文件是:
// Create a new object based of the HTMLElement prototype
var fonixDiv = Object.create(HTMLElement.prototype);
// Set up the element.
fonixDiv.createdCallback = function() {
// Create a Shadow Root
var shadow = this.createShadowRoot();
shadow.innerHTML = '<button id="d">click</button>';
shadow.addEventListener('click', function(e) {
console.log('1: '+this.host.dataset.disabled);
this.host.dataset.disabled='true'; // set Attribute to the custom element
});
shadow.children.d.addEventListener('click', function(e) {
this.textContent = "you clicked me :(";
shadow.children[1].textContent="Shadow DOM content changed";
this.disabled=true;
alert("All: button, text and host should be change");
});
};
// Register the new element.
var Xfonix =document.registerElement('fonix-div', {prototype: fonixDiv});
var thehost = document.querySelector('#host1');
thehost.appendChild(new Xfonix());
.css文件是:
body {background: #F7F7F7;}
fonix-div {
display: inline-block;
width: 200px;
height: 200px;
float: left;
margin: 0.5em;
border-radius: 3px;
background: #FFF;
box-shadow: 0 1px 3px rgba(0,0,0,0.25);
font-family: Helvetica, arial, sans-serif;
-webkit-font-smoothing: antialiased;
}
fonix-div:hover, fonix-div[data-disabled='true']:hover {background: red;}
fonix-div:Active {background: green;}
fonix-div[data-disabled='true'] {background: green;}
fonix-div::shadow p{color: blue;}
可以看到输出here: