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How to implement simple table addition and deletion effects in js

王林forward: 2020-03-16 10:48:462145browse

Let’s take a look at the effect first:

How to implement simple table addition and deletion effects in js

(Recommended tutorial: javascript tutorial)

js implementation:

<!DOCTYPE html>
<html>
<head>
 <meta charset="UTF-8">
 <title>Title</title>
</head>
<!--4、编号：文本框
书名：文本框
作者：文本框
出版社：文本框
添加按钮
表格
编号 书名 作者 出版社 删除-->
</head>
 <body>
 <div id="all">
 <p>编    号：<input type="text"></p>
 <p>书    名：<input type="text"></p>
 <p>作    者：<input type="text"></p>
 <p>出版社 ：<input type="text"></p>
 <p>            
  <input type="button" value="添加" id="tj">
       
  <input type="button" value="清除" id="cle">
 </p>
 </div>
 <script>
 
 var ins,tj,qc,tab,all;
 var bookData=["编号","书名","作者","出版社","删除"];
 init();
 
 function init() {
  all=document.getElementById("all");
  ins=document.getElementsByClassName("in");
  tj=document.getElementById("tj");
  qc=document.getElementById("cle");
  del=document.getElementById("del");
 
  tj.addEventListener("click",clickHandler);
  qc.addEventListener("click",clickQcHandler);
  creatTable();
 }
 
 
 function creatTable() {
  tab = $c("table", all, {
  width:"500px",
  borderCollapse:"collapse"
  });
  for (var i = 0; i < ins.length+1; i++) {//购物车表单数据赋值
  var th = $c("th", tab, {
   textAlign: "center",
   border: "1px solid #000000"
  });
  th.textContent=bookData[i];
  }
 }
 
 function clickHandler() {
  var tr = $c("tr", tab, {
  textAlign: "center",
  border: "1px solid #000000"
  });
  for (var i = 0; i < ins.length+1; i++) {//购物车表单数据赋值
  var td = $c("td", tr, {//列的创建
  textAlign: "center",
   border: "1px solid #000000"
  });
  if(i<ins.length){
   td.textContent = ins[i].value;
  }
  else if(i==ins.length){
   var del=$c("button", td);
   del.textContent="删除";
   del.addEventListener("click",clickDelHandler);
  }
  }
 }
 
 function clickDelHandler(e) {//删除 一行
  this.parentNode.parentNode.remove();
 }
 
 function clickQcHandler(e) {//清除 全部
  tab.remove();
  creatTable();
 }
 
 function $c(type,parent,style) {
  var elem=document.createElement(type);
  if(parent) parent.appendChild(elem);
  for(var key in style){
  elem.style[key]=style[key];
  }
  return elem;
 }
 
 </script>
 </body>
</html>

Related video tutorial recommendations: javascript video tutorial

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