element弹框拖拽
弹框拖拽
1.新建directive.js文件
import Vue from 'vue'
Vue.directive("dialogDrag", {
bind(el, binding, vnode, oldVnode) {
const dialogHeaderEl = el.querySelector(".el-dialog__header");
const dragDom = el.querySelector(".el-dialog");
dialogHeaderEl.style.cursor = "move";
// 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null);
dialogHeaderEl.onmousedown = e => {
// 鼠标按下,计算当前元素距离可视区的距离
const disX = e.clientX - dialogHeaderEl.offsetLeft;
const disY = e.clientY - dialogHeaderEl.offsetTop;
// 获取到的值带px 正则匹配替换
let styL, styT;
// 注意在ie中 第一次获取到的值为组件自带0% 移动之后赋值为px
if (sty.left.includes("%")) {
styL =
+document.body.clientWidth * (+sty.left.replace(/\%/g, "") / 100);
styT =
+document.body.clientHeight * (+sty.top.replace(/\%/g, "") / 100);
} else {
styL = +sty.left.replace(/\px/g, "");
styT = +sty.top.replace(/\px/g, "");
}
document.onmousemove = function(e) {
// 通过事件委托,计算移动的距离
const l = e.clientX - disX;
const t = e.clientY - disY;
// 移动当前元素
dragDom.style.left = `${l + styL}px`;
dragDom.style.top = `${t + styT}px`;
// 将此时的位置传出去
// binding.value({x:e.pageX,y:e.pageY})
};
document.onmouseup = function(e) {
document.onmousemove = null;
document.onmouseup = null;
};
};
}
});
2.main.js引入
/* 注册全局指令 --弹框拖拽 */
import "@/common/drag/directive.js"
3.使用:自定义指令v-dialogDrag
<el-dialog
v-dialogDrag
:visible.sync="dialogVisible"
append-to-body top="32vh"
>
弹框内容...
</el-dialog>