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70 0 }) // 对象深拷贝 function deepcopy(obj){ var newObj = new Object(); for(var key in obj){ if(typeof obj[key] === 'object'){ newObj[key] = deepcopy(obj[key]) }else { newObj[key] = obj[key] } } return newObj } var obj2 = {a:{a:1,b:2,c:{a:1}}} console.log(deepcopy(obj2)) // 判断对象中是否含有某一个值 function hasVal(val,obj){ for(var key in obj){ if(typeof obj[key] === 'object'){ return hasVal(val,obj[key]) }else if(obj[key] === val){ return true; } } return false; } var objj = { value:'aaa', children:{ value:'bbb', children:{ value:'ccc', } } } hasVal('ccc',objj) // true hasVal('bb',objj) // false常用方法记录
