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我试图让一个变量等于下拉选项标签的值，但它返回未定义。它应该获取每个选项的值并将其设置为 data2，但事实并非如此。任何帮助将不胜感激。

    function opis(dat1, dat2) {
        var data1 = dat1;
        var data2 = dat2;
        this.getdata1 = function () {
            return data1;
        };
        this.getdata2 = function () {
            return data2;
        };
        this.setData2 = function (x) {
            data2=x;
        };
    }
    var opis_r2 = new opis("", "");
    var opis_r3 = new opis("", "");
    var opis_r4 = new opis("", "");
    var opis_r5 = new opis("", "????");
    var opis_r6 = new opis("", "");
    var opis_r7 = new opis("", "");
    function check_gen() {
        alert("check_gen");
        opis_r2.setData2(document.forms['mil_resistors_gen'].R22.value);
        opis_r3.setData2(document.forms['mil_resistors_gen'].R33.value);
        opis_r4.setData2(document.forms['mil_resistors_gen'].R44.value);
    opis_r6.setData2(document.forms['mil_resistors_gen'].R66.value);
        opis_r7.setData2(document.forms['mil_resistors_gen'].R22.value);
        explain_gen();
    }

    //==============================================

    function resistance_gen(x) {
        var y, z;
        var ciag = "";
        var zera = 0;
        var txt1 = "";

        y = x.value;

        if (check_coma_gen(y) !== 0) {
            opis_r5.data2 = check_coma_gen(y);
        } else {
            if (check_0_position_gen(y) > 0) {
                window.alert("Incorrect data, enter correct value");
                opis_r5.data2 = "????";
                document.forms['mil_resistors_gen'].R55.focus();
            } else {
                zera = ile_zer_gen(y);
                ciag = first_3d_gen(y, zera); //500
                zera = y.length - ciag.length;
                opis_r5.data2 = ciag + zera;

            }
        }
        explain_gen();
    }
    //============================================

    function check_coma_gen(x) {
        var y, z, c, d, e, dl, f;

        y = x;
        c = 0;
        d = 0;

        dl = x.length;
        while (c < dl) {
            if (x.charAt(c) == ".") {
                d = 1;
            }
            if (x.charAt(c) != ".") {
                d = d;
            }
            c++;
        }

        if (d > 0) {
            z = y.replace('.', 'R'); //zamienia . na R
            e = z.indexOf('R', [0]); //podaje na ktorej poz jest R
            if (e > 2) {
                window.alert("Incorrect data, enter correct value");
            } else {
                f = z.slice(0, e + 2); //wycina ciag od 0 do poz d-1
                return (f);
            }
        }
        if (d === 0) {
            return (0);
        }
    }
    //============================================

    function check_0_position_gen(x) {
        var dl, c, d;

        c = 3;
        d = 0;
        dl = x.length;
        while (c < dl) {
            if (x.charAt(c) === 0) {
                d = d;
            }
            if (x.charAt(c) !== 0) {
                d = 1;
            }
            c++;
        }
        return (d);
    }
    //============================================

    function first_3d_gen(a, b) {
        var dl, c;

        c = 0;
        dl = a.length;
        c = a.slice(0, dl - b);
        if (c.length == 1) {
            c = c + "00";
        }
        if (c.length == 2) {
            c = c + "0";
        }
        //window.alert(c);
        return (c);
    }
    //============================================

    function ile_zer_gen(x) {
        var dl, c, straznik;

        c = 0;
        straznik = 0;
        dl = x.length;

        //window.alert("dlugosc: "+dl);

        while (dl > 0) {
            if (x.charAt(dl - 1) === 0) {
                c++;
            }
            if (x.charAt(dl - 1) !== 0) {
                straznik = 1;
            }
            if (straznik == 1) {
                dl = 0;
            }
            dl--;
        }
        //window.alert("liczba 0: "+c);
        return (c);
    }
    //============================================


    function explain_gen() {
        var part_nr = "";
        part_nr_gen = "Part number is: RN" + opis_r2.getData2 + opis_r3.getData2 + opis_r4.getData2 + opis_r5.getData2 + opis_r6.getData2 + opis_r7.getData2;
        document.forms['mil_resistors_gen'].T33.value = part_nr_gen;
    }
4

1 回答 1

0

你有opis_r2.getData2，但属性是getdata2（没有大写）。它也是一个功能，所以你想要()最后。

part_nr_gen = "Part number is: RN" + opis_r2.getdata2() + opis_r3.getdata2() + 
    opis_r4.getdata2() + opis_r5.getdata2() + opis_r6.getdata2() + opis_r7.getdata2();
于 2013-06-05T21:18:04.737 回答