JS makes quick prompt box
This time I will bring you JS to make a quick prompt box. What are the precautions for making a quick prompt box with JS? The following is a practical case, let's take a look.
Business scenario: When the mouse moves into an element, a prompt box is displayed for introduction. It will automatically disappear when the mouse is removed. Introduce ToolTip.js and ToolTip.css
Main method: ToolTip.show (id of the element to be prompted, as long as it is not repeated, html text to be prompted, width (optional), height (optional) );
ToolTip.show(obj, id, html, width, height);
The effect is as follows:
This time I will bring you what are the precautions , the following is a practical case, let’s take a look.
Display text:
2:Display picture
(function () {
var ToolTip = {};
/**
* 显示函数
*/
ToolTip._showTip = function (parentId, childId, html, width, height) {
var parent = document.getElementById(parentId)//要提示的元素
var child = document.getElementById(childId);
if (child === null) {//创建
var toolTip = document.createElement("p");
toolTip.classList = "ui-tooltip-box";
toolTip.id = childId;
toolTip.innerHTML = html;
parent.appendChild(toolTip);
toolTip.style.width = width ? width + "px" : "auto"
toolTip.style.height = height ? height + "px" : "auto"
//定位：
toolTip.style.position = "absolute";
toolTip.style.display = "block";
var left = parent.offsetLeft;
var top = parent.offsetTop;
if (left + toolTip.offsetWidth > document.body.clientWidth) {
left = document.body.clientWidth / 2;
}
toolTip.style.left = left + "px";
toolTip.style.top = top + 20 + "px";
parent.onmouseleave = function (ev) {
setTimeout(function () { //延迟：
document.getElementById(childId).style.display = "none";//隐藏
}, 300);
}
} else {
//显示
document.getElementById(childId).style.display = "block";
}
},
/**
* 调用入口
*/
ToolTip.show = function (parentId, childId, html, width, height) {
var parent = document.getElementById(obj)
parent.onmouseenter = function (ev) {
ToolTip._showTip(parentId, childId, html, width, height)
}
}
window.ToolTip = ToolTip;
})();//为防止污染，将方法写在匿名函数中<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>提示框</title>
<link rel="stylesheet" type="text/css" href="ToolTip.css" rel="external nofollow" >
</head>
<body>
<p class="ui-tooltip-demo">
<p><a class="ui-tooltip" id="tooltip-text">唐诗</a></p>
<p><a class="ui-tooltip" id="tooltip-photo">背景图片</a></p>
<p><a class="ui-tooltip" id="tooltip-poem">Yi人诗社</a></p>
</p>
<script src="js/ToolTip.js"></script>
<script>
//调用方式
ToolTip.show("tooltip-text", "01", "唐诗泛指创作于唐朝的诗" +
"。唐诗是中华民族最珍贵的文化遗产之一，是" +
"中华文化宝库中的一颗明珠，" +
"同时也对世界上许多民族和国家的文化发展产生了很大影响，" +
"对于后人研究唐代的政治、民情、风俗、" +
"文化等都有重要的参考意义和价值。",300,90);
ToolTip.show("tooltip-photo", "02", "<img src=\"imgs/bg.jpg\" height=\"80px\">",150,80);
var html='<iframe src="http://www.toly.top" width="480px" height="300px"/>'
ToolTip.show("tooltip-poem", "03", html);
</script>
</body>
</html>body {
font-size: 14px;
line-height: 1.8;
background-image: url("imgs/bg.jpg");
}
.ui-tooltip-demo {
width: 500px;
margin: 30px auto;
padding: 20px 30px;
background-color: rgba(100%, 100%, 100%, 0.4);
border-radius: 10px;
text-align: center;
box-shadow: 2px 1px 0px 3px rgba(0, 0, 0, 0.2);
}
.ui-tooltip-demo .ui-tooltip {
color: #03f;
font-size: 18px;
cursor: help;
}
.ui-tooltip-box {
display: block;
background: #fff;
line-height: 1.6;
border: 1px solid #6cf;
color: #333;
padding: 20px;
font-size: 12px;
border-radius: 5px;
overflow: auto;
}D3.js to make a memory circle in the project Save image
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