1.新建一个js文件 esresize.js
var EleResize = {
_handleResize: function(e) {
var ele = e.target || e.srcElement
var trigger = ele.__resizeTrigger__
if (trigger) {
var handlers = trigger.__z_resizeListeners
if (handlers) {
var size = handlers.length
for (var i = 0; i < size; i++) {
var h = handlers[i]
var handler = h.handler
var context = h.context
handler.apply(context, [e])
}
}
}
},
_removeHandler: function(ele, handler, context) {
var handlers = ele.__z_resizeListeners
if (handlers) {
var size = handlers.length
for (var i = 0; i < size; i++) {
var h = handlers[i]
if (h.handler === handler && h.context === context) {
handlers.splice(i, 1)
return
}
}
}
},
_createResizeTrigger: function(ele) {
var obj = document.createElement('object')
obj.setAttribute(
'style',
'display: block; position: absolute; top: 0; left: 0; height: 100%; width: 100%; overflow: hidden;opacity: 0; pointer-events: none; z-index: -1;'
)
obj.onload = EleResize._handleObjectLoad
obj.type = 'text/html'
ele.appendChild(obj)
obj.data = 'about:blank'
return obj
},
_handleObjectLoad: function() {
this.contentDocument.defaultView.__resizeTrigger__ = this.__resizeElement__
this.contentDocument.defaultView.addEventListener(
'resize',
EleResize._handleResize
)
}
}
if (document.attachEvent) {
// ie9-10
EleResize.on = function(ele, handler, context) {
var handlers = ele.__z_resizeListeners
if (!handlers) {
handlers = []
ele.__z_resizeListeners = handlers
ele.__resizeTrigger__ = ele
ele.attachEvent('onresize', EleResize._handleResize)
}
handlers.push({
handler: handler,
context: context
})
}
EleResize.off = function(ele, handler, context) {
var handlers = ele.__z_resizeListeners
if (handlers) {
EleResize._removeHandler(ele, handler, context)
if (handlers.length === 0) {
ele.detachEvent('onresize', EleResize._handleResize)
delete ele.__z_resizeListeners
}
}
}
} else {
EleResize.on = function(ele, handler, context) {
var handlers = ele.__z_resizeListeners
if (!handlers) {
handlers = []
ele.__z_resizeListeners = handlers
if (getComputedStyle(ele, null).position === 'static') {
ele.style.position = 'relative'
}
var obj = EleResize._createResizeTrigger(ele)
ele.__resizeTrigger__ = obj
obj.__resizeElement__ = ele
}
handlers.push({
handler: handler,
context: context
})
}
EleResize.off = function(ele, handler, context) {
var handlers = ele.__z_resizeListeners
if (handlers) {
EleResize._removeHandler(ele, handler, context)
if (handlers.length === 0) {
var trigger = ele.__resizeTrigger__
if (trigger) {
trigger.contentDocument.defaultView.removeEventListener(
'resize',
EleResize._handleResize
)
ele.removeChild(trigger)
delete ele.__resizeTrigger__
}
delete ele.__z_resizeListeners
}
}
}
}
export { EleResize }
2.引入 esresize .js
import { EleResize } from '../../assets/js/esresize'
3.使用
myChart.setOption(option)
let listener = function () {
myChart.resize()
}
EleResize.on(document.getElementById('myChart'), listener)
4.注意事项
<div id="myChart"
:style="{width: 'calc(100vw - 256px)', height: '450px'}"></div>
width不能为实际值，若设置为%则会出现f5刷新之后超出屏幕
网友评论