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coffeesam/is-nric.js

Forked from eddiemoore/nric-validation.js
Last active June 11, 2018 10:03
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Revisions

  1. coffeesam renamed this gist Jun 11, 2018. 1 changed file with 0 additions and 0 deletions.
    0 isNRIC.js → is-nric.js
    View file
    File renamed without changes.
  2. coffeesam revised this gist Jun 11, 2018. 2 changed files with 40 additions and 38 deletions.
    40 changes: 40 additions & 0 deletions isNRIC.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,40 @@
    //Based on http://www.samliew.com/icval/
    const isNRIC = (str) => {
    if (str.length != 9)
    return false;

    str = str.toUpperCase();

    let i;
    const icArray = [];
    for(i = 0; i < 9; i++) {
    icArray[i] = str.charAt(i);
    }

    icArray[1] = parseInt(icArray[1], 10) * 2;
    icArray[2] = parseInt(icArray[2], 10) * 7;
    icArray[3] = parseInt(icArray[3], 10) * 6;
    icArray[4] = parseInt(icArray[4], 10) * 5;
    icArray[5] = parseInt(icArray[5], 10) * 4;
    icArray[6] = parseInt(icArray[6], 10) * 3;
    icArray[7] = parseInt(icArray[7], 10) * 2;

    let weight = 0;
    for(i = 1; i < 8; i++) {
    weight += icArray[i];
    }

    const offset = (icArray[0] == "T" || icArray[0] == "G") ? 4:0;
    const temp = (offset + weight) % 11;

    const st = ["J","Z","I","H","G","F","E","D","C","B","A"];
    const fg = ["X","W","U","T","R","Q","P","N","M","L","K"];

    let theAlpha;
    if (icArray[0] == "S" || icArray[0] == "T") { theAlpha = st[temp]; }
    else if (icArray[0] == "F" || icArray[0] == "G") { theAlpha = fg[temp]; }

    return (icArray[8] === theAlpha);
    }

    module.exports = isNRIC
    38 changes: 0 additions & 38 deletions nric-validation.js
    View file
    Original file line number Diff line number Diff line change
    @@ -1,38 +0,0 @@
    //Based on http://www.samliew.com/icval/
    function validateNRIC(str) {
    if (str.length != 9)
    return false;

    str = str.toUpperCase();

    var i,
    icArray = [];
    for(i = 0; i < 9; i++) {
    icArray[i] = str.charAt(i);
    }

    icArray[1] = parseInt(icArray[1], 10) * 2;
    icArray[2] = parseInt(icArray[2], 10) * 7;
    icArray[3] = parseInt(icArray[3], 10) * 6;
    icArray[4] = parseInt(icArray[4], 10) * 5;
    icArray[5] = parseInt(icArray[5], 10) * 4;
    icArray[6] = parseInt(icArray[6], 10) * 3;
    icArray[7] = parseInt(icArray[7], 10) * 2;

    var weight = 0;
    for(i = 1; i < 8; i++) {
    weight += icArray[i];
    }

    var offset = (icArray[0] == "T" || icArray[0] == "G") ? 4:0;
    var temp = (offset + weight) % 11;

    var st = ["J","Z","I","H","G","F","E","D","C","B","A"];
    var fg = ["X","W","U","T","R","Q","P","N","M","L","K"];

    var theAlpha;
    if (icArray[0] == "S" || icArray[0] == "T") { theAlpha = st[temp]; }
    else if (icArray[0] == "F" || icArray[0] == "G") { theAlpha = fg[temp]; }

    return (icArray[8] === theAlpha);
    }
  3. @eddiemoore eddiemoore revised this gist Oct 24, 2013. 1 changed file with 4 additions and 6 deletions.
    10 changes: 4 additions & 6 deletions nric-validation.js
    View file
    Original file line number Diff line number Diff line change
    @@ -1,3 +1,4 @@
    //Based on http://www.samliew.com/icval/
    function validateNRIC(str) {
    if (str.length != 9)
    return false;
    @@ -30,11 +31,8 @@ function validateNRIC(str) {
    var fg = ["X","W","U","T","R","Q","P","N","M","L","K"];

    var theAlpha;
    if (icArray[0] == "S" || icArray[0] == "T") {
    theAlpha = st[temp];
    } else if (icArray[0] == "F" || icArray[0] == "G") {
    theAlpha = fg[temp];
    }
    if (icArray[0] == "S" || icArray[0] == "T") { theAlpha = st[temp]; }
    else if (icArray[0] == "F" || icArray[0] == "G") { theAlpha = fg[temp]; }

    return icArray[8] != theAlpha ? false : true;
    return (icArray[8] === theAlpha);
    }
  4. @eddiemoore eddiemoore created this gist Oct 24, 2013.
    40 changes: 40 additions & 0 deletions nric-validation.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,40 @@
    function validateNRIC(str) {
    if (str.length != 9)
    return false;

    str = str.toUpperCase();

    var i,
    icArray = [];
    for(i = 0; i < 9; i++) {
    icArray[i] = str.charAt(i);
    }

    icArray[1] = parseInt(icArray[1], 10) * 2;
    icArray[2] = parseInt(icArray[2], 10) * 7;
    icArray[3] = parseInt(icArray[3], 10) * 6;
    icArray[4] = parseInt(icArray[4], 10) * 5;
    icArray[5] = parseInt(icArray[5], 10) * 4;
    icArray[6] = parseInt(icArray[6], 10) * 3;
    icArray[7] = parseInt(icArray[7], 10) * 2;

    var weight = 0;
    for(i = 1; i < 8; i++) {
    weight += icArray[i];
    }

    var offset = (icArray[0] == "T" || icArray[0] == "G") ? 4:0;
    var temp = (offset + weight) % 11;

    var st = ["J","Z","I","H","G","F","E","D","C","B","A"];
    var fg = ["X","W","U","T","R","Q","P","N","M","L","K"];

    var theAlpha;
    if (icArray[0] == "S" || icArray[0] == "T") {
    theAlpha = st[temp];
    } else if (icArray[0] == "F" || icArray[0] == "G") {
    theAlpha = fg[temp];
    }

    return icArray[8] != theAlpha ? false : true;
    }