JavaScript制作一个简单的提示框插件
下面是制作的提示框插件文件
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window.myPlugin = window.myPlugin || {};
window.myPlugin.showMsg = (function () {
var *, //蒙层
promptBox, //提示框
closeSpan, //关闭按钮
titleSpan, //提示标题
contextSpan, //提示信息
okBtn, //确定按钮
cancelBtn, //取消按钮
isRegEvent, //是否注册事件
option; //传入的参数
/**
* 初始化蒙层
*/
function init*() {
if (!*) { //没有蒙层则初始化
//蒙层：覆盖整个窗口，半透明的黑色
* = document.createElement("div");
*.style.position = "fixed";
*.style.width = *.style.height = "100%";
*.style.left = *.style.top = 0;
*.style.background = "rgba(0,0,0,.5)";
document.body.appendChild(*);
}
*.style.display = "block"; //展示蒙层
}
/**
* 初始化提示框
*/
function initPromptBox() {
//提示框：宽高300，位置居中
if (!promptBox) {
promptBox = document.createElement("div");
promptBox.style.width = promptBox.style.height = "300px";
promptBox.style.background = "#fff";
promptBox.style.fontSize = "14px";
promptBox.style.position = "absolute";
promptBox.style.top = promptBox.style.left = "50%";
promptBox.style.marginLeft = promptBox.style.marginTop = "-150px";
promptBox.style["data-myplugin-id"] = "promptBox";
initPromptContext();
*.appendChild(promptBox);
titleSpan = document.querySelector("[data-myplugin-id='title']"); //提示标题
contextSpan = document.querySelector("[data-myplugin-id='message']"); //提示信息
closeSpan = document.querySelector("[data-myplugin-id='close']"); //关闭按钮
okBtn = document.querySelector("[data-myplugin-id='ok']"); //确定按钮
cancelBtn = document.querySelector("[data-myplugin-id='cancel']"); //取消按钮
}
okBtn.innerText = option.okText || "确定";
cancelBtn.innerText = option.cancelText || "取消";
titleSpan.innerText = option.title || "提示";
contextSpan.innerText = option.context || "";
}
/**
* 初始化提示框中的内容
*/
function initPromptContext() {
//内容包含：标题，关闭按钮，提示信息，确定按钮，取消按钮
//创建标题，关闭按钮
var div = document.createElement("div");
div.innerHTML = `<span style="float:left;" data-myplugin-id="title"></span>
<span style="float:right;cursor:pointer;" data-myplugin-id="close">X</span>`;
div.style.height = "50px";
div.style.padding = "10px 20px";
div.style.background = "#eee";
div.style.boxSizing = "border-box";
promptBox.appendChild(div);
//创建提示信息
div = document.createElement("div");
div.innerHTML = `<span data-myplugin-id="message"></span>`;
div.style.height = "200px";
div.style.padding = "10px 20px";
div.style.boxSizing = "border-box";
promptBox.appendChild(div);
//创建确定按钮，取消按钮
div = document.createElement("div");
div.innerHTML = `<button style="float:right;margin:10px;cursor:pointer;" data-myplugin-id="cancel"></button><button style="float:right;margin:10px;cursor:pointer;" data-myplugin-id="ok"></button>`;
div.style.height = "50px";
div.style.padding = "10px 20px";
div.style.boxSizing = "border-box";
promptBox.appendChild(div);
}
//注册事件
function regEvent() {
if (!isRegEvent) { //未注册事件
//1.点击关闭，点击蒙层，点击取消按钮
closeSpan.onclick = *.onclick = function () {
*.style.display = "none"; //隐藏蒙层
};
okBtn.onclick = function () {
option && option.okFunction && option.okFunction();
*.style.display = "none"; //隐藏蒙层
}
cancelBtn.onclick = function () {
option && option.cancelFunction && option.cancelFunction();
*.style.display = "none"; //隐藏蒙层
}
//2.拖动提示框事件
window.onmousedown = function (e) {
var target = getTarget(e.target); //是否包含目标元素
if (target) {
var style = window.getComputedStyle(target);
var left = parseInt(style.left);
var top = parseInt(style.top);
var disX = parseInt(e.pageX) - left;
var disY = parseInt(e.pageY) - top;
window.onmousemove = function (e) {
var newLeft = parseInt(e.pageX) - disX;
var newTop = parseInt(e.pageY) - disY;
promptBox.style.left = newLeft + "px";
promptBox.style.top = newTop + "px";
};
window.onmouseup = window.onmouseleave = function () {
window.onmousemove = null;
}
}
};
function getTarget(target) {
while (target) {
if (target.tagName === "DIV" && target.style["data-myplugin-id"] === "promptBox") {
return target;
} else {
target = target.parentElement;
}
}
return false;
}
}
}
/**
* @param {object} opts
* opts.title : 提示标题
* opts.context : 提示信息
* opts.cancelText:取消按钮内容
* opts.okText:确定按钮内容
* opts.cancelText:取消按钮内容
* opts.okFunction:确定按钮的回调函数
* opts.cancelFunction:取消按钮的回调函数
*/
function showMsg(opts) {
if (typeof opts === "string") {
option = {
context: opts
}
} else {
option = opts || {};
}
init*();
initPromptBox();
regEvent();
}
return showMsg;
}());
myPlugin.js
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引入并使用myPlugin.js文件
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script src="./js/myPlugin.js"></script>
<script>
window.myPlugin.showMsg({
title: "信息",
context: "确定删除吗",
okText: "OK",
cancelText: "Cancel",
okFunction: function(){
console.log("点击OK按钮");
},
cancelFunction:function(){
console.log("点击Cancel按钮");
}
});
</script>
</body>
</html>
index.html
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效果展示：
以上就是js制作提示框插件的详细内容，更多关于js 制作提示框的资料请关注服务器之家其它相关文章！
原文链接：https://www.cnblogs.com/lanshanxiao/p/12820288.html