喵喔喔
$(function () { $('#template').change(function () { var template = $(this).val(); if (template !== '') { template = parseInt(template); $('.form-control').each(function() { $(this).val(template); template++; }); } });});修改如下:<select id="template"> <option value="clear">不選取</option> <option value="num">1-5</option> <option value="letter">a-e</option> <option value="str">1-5计</option></select>$(function () { let num = [1,2,3,4,5], letter = ['a','b', 'c', 'd', 'e'], str = ['瞞天過海', '圍魏救趙', '借刀殺人', '以逸待勞','趁火打劫']; $('#template').change(function () { let template = $(this).val(); if (template === 'num') { $('.form-control').each(function(i) { let text = $(this).val() + num[i]; $(this).val(text); }) } else if(template === 'letter') { $('.form-control').each(function(i) { let text = $(this).val() + letter[i]; $(this).val(text); }); } else if(template === 'str') { $('.form-control').each(function(i) { let text = $(this).val() + str[i]; $(this).val(text); }); } });});