我用forEach是不是list長(zhǎng)度0的時(shí)候它不執(zhí)行,那我for為什么還是不行l(wèi)ist=[{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;i
大佬們遇到過(guò)這個(gè)問(wèn)題嗎？js數(shù)組對(duì)象push前怎么判斷是否存在該元素求大佬指點(diǎn)！
瀟湘沐
2019-08-14 20:27:23
