行政区划截取js

//判断行政区划级别
export function getAreaCodeLevel(areaCode) {
    if (areaCode) {
        let length = getVaildCode(areaCode).length;
        let level = '1';

        if (length > 0 && length <= 2) {//省级
            level = "1";
        } else if (length > 2 && length <= 4) { //市级
            level = "2";
        } else if (length > 4 && length <= 6) { //县级
            level = "3";
        } else if (length > 6 && length <= 9) { //乡级
            level = "4";
        } else if (length > 9 && length <= 12) { //村级
            level = "5";
        } else {
            level = "1";
        }
        return level;
    } else {
        return '';
    }
}


function getVaildCode(code) {
    let arr = code.split("").reverse();
    let c = 0;
    for (let i = 0; i < arr.length; i++) {
        if (arr[i] != '0') {
            c = i;
            break;
        }
    }
    return code.substring(0, 12 - c);
}


export function getParentAreaCodeByCodeAndLevel(code, level) {
    let areaCode = ''
    if (level == '1')
        areaCode = code.substring(0, 2) + '0000000000';
    else if (level == '2')
        areaCode = code.substring(0, 4) + '00000000';
    else if (level == '3')
        areaCode = code.substring(0, 6) + '000000';
    else if (level == '4')
        areaCode = code.substring(0, 9) + '000';
    else if (level == '5')
        areaCode = code;
    return areaCode;
}

//截取行政区划
export function getAreaCode(code, level) {
    let areaCode = ''
    if (level == '1')
        areaCode = code.substring(0, 2);
    else if (level == '2')
        areaCode = code.substring(0, 4);
    else if (level == '3')
        areaCode = code.substring(0, 6);
    else if (level == '4')
        areaCode = code.substring(0, 9);
    else if (level == '5')
        areaCode = code;
    return areaCode;
}


export function getVaildCodes(code) {
    let arr = code.split("").reverse();
    let c = 0;
    for (let i = 0; i < arr.length; i++) {
        if (arr[i] != '0') {
            c = i;
            break;
        }
    }
    return code.substring(0, 12 - c);
}

export function getVaildCodesNew(code) {
    let level = getAreaCodeLevel(code);
    let areaCode = ''
    if (level == '1')
        areaCode = code.substring(0, 2);
    else if (level == '2')
        areaCode = code.substring(0, 4);
    else if (level == '3')
        areaCode = code.substring(0, 6);
    else if (level == '4')
        areaCode = code.substring(0, 9);
    else if (level == '5')
        areaCode = code;
    return areaCode;
}