【笔记】js对象通过属性路径获取属性值

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• 入参：object（对象）、path（路径：string类型）

function getPropByPath(obj, path) {
    
    
    let tempObj = obj;
    let keyArr = path.split('.');
    let i = 0;

    for (; i < keyArr.length - 1; ++i) {
    
    
        let key = keyArr[i];
        if (key in tempObj) {
    
    
            tempObj = tempObj[key];
        } else {
    
    
            throw new Error(`path \'${
      
      key}\' not found!`);
        }
    }
    return {
    
    
        o: tempObj,
        k: keyArr[i],
        v: tempObj[keyArr[i]]
    };
}

over