vue ElementUI中dispatch和broadcast事件派发(通过mixin引入使用)

function broadcast(componentName, eventName, params) {   this.$children.forEach(child => {   var name = child.$options.componentName;   if (name === componentName) {     child.$emit.apply(child, [eventName].concat(params));   } else {     broadcast.apply(child, [componentName, eventName].concat([params]));   } }); } export default { methods: {   dispatch(componentName, eventName, params) {     var parent = this.$parent || this.$root;     var name = parent.$options.componentName;     while (parent && (!name || name !== componentName)) {     parent = parent.$parent;     if (parent) {     name = parent.$options.componentName;     }   }   if (parent) {     parent.$emit.apply(parent, [eventName].concat(params));     }   },   broadcast(componentName, eventName, params) {     broadcast.call(this, componentName, eventName, params);   }  } }; vue ElementUI中dispatch和broadcast事件派发(通过mixin引入使用)

 

 

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