如何使用java脚本将所选数据库值设置为多个html选择 [英] how to set selected database value to multiple html select using java script

问题描述

如果我选择任何记录我想要突出显示多个选择选项中的选择项我在json写这行但是它不起作用请帮助我



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if i selected any record i want highlight the selects item in multiple select option i write this line in json but it doesn't work please help me

BindAgnGroup(document.getElementById("cmb_agency"));
           //BindAgnGroup(document.getElementById("cmb_group")).value = response.d[0].agroup;

           var selected = document.getElementById('cmb_group');
           //selected.onchange = function () {
           for (var i = 0; i < response.d[0].agroup.length; i++) {

               selected.options[i].selected = true;

           }

推荐答案

您无需编写任何内容即可显示多个选定值。因为你已经写了多个=倍数，它指定可以一次选择多个选项。要做到这一点，你需要按住（按）控制（ctrl）按钮/键选择多个选项。

You do not need to write anything to display multiple selected values. Because you are already writing multiple="multiple" which specifies that multiple options can be selected at once.To do that you need to hold down(press)the control(ctrl)button/key to select multiple options.

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