我用forEach是不是list长度0的时候它不执行,那我for为什么还是不行list=[{id:1,name:'a'},{id:2,name:'b'}]push(action){list.forEach(i=>{if(i.code!==action.code){list.push(action);}})}push(action){for(vari=0;iif(list[i].code!==action.code){ list.push(action);}}}
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