class Storedata {
constructor(name, desc, price, qty) {
this.name = name;
this.desc = desc;
this.price = price;
this.qty = qty;
}
}
var arr = [];
var btnform = document.getElementById('clicktoadd');
var btnlist = document.getElementById('clicktoshow');
var rem = document.getElementById('main');
var cancelform;
var submit;
function addData() {
var proname = document.getElementById("inpname");
var prodesc = document.getElementById("inpdesc");
var propric = document.getElementById("inpprice");
var proqty = document.getElementById("inpqty");
arr.push(new Storedata(proname.value, prodesc.value, propric.value, proqty.value));
}
function showlist() {
var data = document.createElement('table');
data.setAttribute("id", "data");
data.innerHTML += "<tr><th>Product Name</th><th>Description</th><th>Price</th><th>Quantity</th><th></th></tr>";
for (let i = 0; i < arr.length; i++) {
data.innerHTML += ("<tr><td>" + arr[i].name + "</td><td>" + arr[i].desc + "</td><td>" + arr[i].price + "</td><td>" + arr[i].qty + "</td><td><button id=\"delete" + i + "\">Delete</button></tr>");
};
document.getElementById('listing').appendChild(data);
document.getElementById('showbutton').removeAttribute("hidden", false);
}
function removelist() {
var data = document.getElementById("data");
data.parentNode.removeChild(data);
}
function addformtopage() {
var form = document.createElement('div');
form.setAttribute("id", "remform");
form.innerHTML += "<div id=\"lblname\">Product Name:</div><input id=\"inpname\" type=\"text\"><div id=\"chkname\" hidden=\"true\">Enter a Product Name</div><div id=\"lbldesc\">Description:</div><textarea id=\"inpdesc\" rows=\"10\" cols=\"35\"></textarea><div id=\"chkdesc\" hidden=\"true\">Enter a Product Desciption</div><div id=\"lblprice\">Price in INR:</div><input id=\"inpprice\" type=\"number\"><div id=\"chkprice\" hidden=\"true\">Enter a Product Price</div><div id=\"lblqty\">Quantity:</div><input id=\"inpqty\" type=\"number\"><div id=\"chkqty\" hidden=\"true\">Enter a Product Quantity</div><br><br><button id=\"submitproduct\">Submit</button><button id=\"cancel\">Cancel</button>";
document.getElementById('panel').appendChild(form);
cancelform = document.getElementById('cancel');
submit = document.getElementById('submitproduct');
}
function validateform() {
var proname = document.getElementById("inpname");
var prodesc = document.getElementById("inpdesc");
var propric = document.getElementById("inpprice");
var proqty = document.getElementById("inpqty");
var errname = document.getElementById("chkname");
var errdesc = document.getElementById("chkdesc");
var errpric = document.getElementById("chkprice");
var errqty = document.getElementById("chkqty");
if ((proname.value) && (prodesc.value) && (propric.value) && (proqty.value)) {
errname.setAttribute("hidden", true);
errdesc.setAttribute("hidden", true);
errpric.setAttribute("hidden", true);
errqty.setAttribute("hidden", true);
return true;
}
if (proname.value) {
errname.setAttribute("hidden", true);
}
if (prodesc.value) {
errdesc.setAttribute("hidden", true);
}
if (propric.value) {
errpric.setAttribute("hidden", true);
}
if (proqty.value) {
errqty.setAttribute("hidden", true);
}
if (!proname.value) {
errname.removeAttribute("hidden", false);
}
if (!prodesc.value) {
errdesc.removeAttribute("hidden", false);
}
if (!propric.value) {
errpric.removeAttribute("hidden", false);
}
if (!proqty.value) {
errqty.removeAttribute("hidden", false);
}
return false;
}
function clearform() {
var proname = document.getElementById("inpname");
var prodesc = document.getElementById("inpdesc");
var propric = document.getElementById("inpprice");
var proqty = document.getElementById("inpqty");
proname.value = null;
prodesc.value = null;
propric.value = null;
proqty.value = null;
}
function removeform() {
var elem = document.getElementById("remform");
elem.parentNode.removeChild(elem);
}
function removebuttons() {
rem.setAttribute("hidden", true);
}
function showbuttons() {
rem.removeAttribute("hidden", false);
}
btnform.addEventListener('click', function() {
addformtopage();
removebuttons();
cancelform.addEventListener('click', function() {
showbuttons();
removeform();
});
submit.addEventListener('click', function() {
if (validateform()) {
alert("Values Added");
addData();
clearform();
}
});
});
btnlist.addEventListener('click', function() {
showlist();
removebuttons();
document.getElementById('showbutton').addEventListener('click', function() {
showbuttons();
removelist();
document.getElementById('showbutton').setAttribute("hidden", "true");
});
});
#chkname,
#chkdesc,
#chkprice,
#chkqty {
color: red;
}
table {
font-family: arial, sans-serif;
border-collapse: collapse;
width: 70%;
}
td,
th {
border: 1px solid #dddddd;
text-align: left;
padding: 8px;
}
<!DOCTYPE HTML>
<html>
<head>
<link href="style.css" rel="stylesheet" />
<title>
JS Form
</title>
</head>
<body>
<div id="main">
<p><button id="clicktoadd">Add Product</button> <button id="clicktoshow">Show List</button></p>
</div>
<div id="panel">
</div>
<div id="listing">
</div>
<button id="showbutton" hidden="true">< Back</button>
<script src="script.js"></script>
</body>
</html>
我想以表格形式输入内容以格式文本形式描述该项目。然后以与输入相同的格式输出它,但是现在我得到的文本是用空格分隔的,其中
应该存在。请帮忙。
执行步骤 1.运行此代码段。 2.单击“添加产品”按钮。 3.填写表格(为进行测试,给出多行描述)并提交。 4.单击“取消”按钮返回。 5.单击“显示列表”按钮。 6.观察“描述”列。
This is output I am getting separated by spaces This is form input I am providing
答案 0 :(得分:0)
嗯,您有两个选择。添加<pre>
标记:
for (let i = 0; i < arr.length; i++) {
data.innerHTML += ("<tr><td>" + arr[i].name + "</td><td><pre>" + arr[i].desc + "</pre></td><td>" + arr[i].price + "</td><td>" + arr[i].qty + "</td><td><button id=\"delete" + i + "\">Delete</button></tr>");
};
这样,它将显示新行,并使您的字符串保持干净。
或者您可以用<br>
替换新行:
for (let i = 0; i < arr.length; i++) {
data.innerHTML += ("<tr><td>" + arr[i].name + "</td><td>" + arr[i].desc.replace(/\n/g, "<br>") + "</td><td>" + arr[i].price + "</td><td>" + arr[i].qty + "</td><td><button id=\"delete" + i + "\">Delete</button></tr>");
};
请记住,默认情况下,HTML中不显示新行,如果要添加新行,请放置<br>
希望有帮助! :)
答案 1 :(得分:0)
将此添加到您的代码中:
var text = arr[i].desc;
text = text.replace(/\n/g, '<br />');
也请参见JavaScript: How to add line breaks to an HTML textarea?。