本文介绍了如何在字段和新创建的字段之间添加数字。的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧! 问题描述 请在我的工作中有一个问题,我有输入字段,并有一个按钮,我用来创建新的输入字段与onclick事件但我的问题是如何在两个输入字段中添加数字。 我的尝试: var count = 1; function add(){ count ++; var form = document.getElementById('3030') var divtest = document.createElement (div); divtest.innerHTML ='< form id =code_3030>< div id =credit_unitname =myfile >< input type =textid =unit4placeholder =Creditonkeyup =mul()>< / div>< / form>'; form.appendChild(divtest) } 函数mul(){ var unit = document.getElementById('unit4')。value, output = document .getElementById('code4'); if(form.appendChild(divest)== true){ var ans = unit * divtest; } else { 提醒(解决); } output.value = ans; } please i have a problem here in my work i have and input field and have a button that i use to create new input field with onclick event but my problem is how to add numbers in both input field.What I have tried:var count = 1;function add(){ count++;var form = document.getElementById('3030') var divtest = document.createElement("div"); divtest.innerHTML = '<form id = "code_3030"><div id = "credit_unit" name = "myfile"><input type = "text" id = "unit4" placeholder = "Credit" onkeyup = "mul()"></div></form>'; form.appendChild(divtest) } function mul(){ var unit = document.getElementById('unit4').value, output = document.getElementById('code4');if(form.appendChild(divest) == true){ var ans = unit * divtest;}else{ alert("work it out");}output.value = ans; }推荐答案 你的Add()函数将创建多个div和具有相同id的输入 Your Add() function will create multiple div and inputs with same id<div id = "credit_unit" name = "myfile"><input type = "text" id = "unit4" placeholder = "Credit" onkeyup ="mul()"></div><div id = "credit_unit" name = "myfile"><input type = "text" id = "unit4" placeholder = "Credit" onkeyup ="mul()"></div> getElementById将返回更多值节点,您需要循环或采用默认值或创建一个唯一身份。同时删除代码中类型之间的空格,并在javascript中使用双引号而不是单引号。 getElementById will return more value nodes, you need to loop or take the default or create a unique id. Also remove te spaces between the types in your code and use double quotes in your javascript instead of single. document.getElementById("code4")[0].value; 这篇关于如何在字段和新创建的字段之间添加数字。的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持! 11-02 23:22