Form in HTML
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>A sample Form Using Get</title> </head> <body BGCOLOR="#FDF5E6"> <h2 Align="center">A Sample Form Using Get</h2> <form id="infoForm" method="get" action="parameters"> First name: <input id="firstName" type="text" name="firstName" value="Jingyang" /><br /> Last name: <input id="lastName" type="text" name="lastName" value="Yu" /> <p /> <input type="radio" name="sex" id="male" value="male"/>Male<br /> <input type="radio" name="sex" id="female" value="female"/>Female <p /> <input type="checkbox" name="vehicle" value="Bike" id="bike" />I have a bike<br /> <input type="checkbox" name="vehicle" value="Car" id="car" onclick="displayCarSelect()" />I have a car <select name="cars" style="display: none" id="carSelect"> <option value="volvo">Volve</option> <option value="audi">Audi</option> <option value="bmw">BMW</option> <option value="vw">VW</option> </select> <p /> <p /> <input type="button" value="submit" id="sub"/> </form> </body> </html>
<script type="text/javascript"> function displayCarSelect() { if (document.getElementById("car").checked) document.getElementById("carSelect").style.display = "block"; else document.getElementById("carSelect").style.display = "none"; } function trim(s) { return s.replace(/^\s*/, "").replace(/\s*$/, ""); } function check() { var firstName = document.getElementById("firstName").value; var form = document.getElementById("infoForm"); var lastName = form.lastName.value; var error = ""; if (trim(firstName) == null || trim(firstName) == "") { error += "\n first name can not be empty"; form.firstName.focus(); } if (trim(lastName) == null || trim(lastName) == "") { error += "\n last name can not be empty"; form.lastName.focus(); } if(!document.getElementById("male").checked&&!document.getElementById("female").checked){ error+="\n please select your sex"; } if (error != "") { alert(error); } else { form.submit(); } } document.getElementById("sub").onclick=check; </script>
Table in HTML
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>access table element</title> </head> <body> <div id="change"> Change the <input id="rowToChange" type="number" size="2"/> row, the <input id="colToChange" type="number" size="2" /> column with the value <input id="value" type="text" size="16"/> <input id="btnChange" type="button" value="Change" onclick="change()"/> </div> <br/><br/> <div id="insert"> Insert in the <input id="rowToInsert" type="number" size="2"/> row, with the First name: <input id="firstName" type="text" size="16"/> and the Last name: <input id="lastName" type="text" size="16"/> <input id="btnInsert" type="button" value="Insert" onclick="insert()"/> </div> <br/><br/> <div id="delete"> Delete the <input id="rowToDelete" type="number" size="2"/> row <input id="btnDelete" type="button" value="Delete" onclick="deleteRow()"/> </div> <br/><br/> <div id="table"> <table id="t" border="1"> <caption>Name Table</caption> <thead> <tr> <th>First Name</th> <th>Last Name</th> </tr> </thead> <tr> <td>Jingyang</td> <td>Yu</td> </tr> <tr> <td>Yufeng</td> <td>Guo</td> </tr> <tr> <td>Christian</td> <td>Meier</td> </tr> </table> </div> <br/><br/> <div id="getValue"> Display the <input id="rowToSelect" type="number" size="2"/> row, the <input id="colToSelect" type="number" size="2" /> column with the value <input id="btnGet" type="button" value="Get" onclick="get()"/><br/> <textarea id="textForSelect" rows="2" cols="10" readonly></textarea> </div> </body> </html>
<script type="text/javascript"> function get(){ var table=document.getElementById("t"); var row = document.getElementById("rowToSelect").value; row = parseInt(row); var col=document.getElementById("colToSelect").value; col= parseInt(col); if(isNaN(row)){ alert("the input of the row must be a number"); return false; } if(isNaN(col)){ alert("the input of the column must be a number"); return false; } if(row>table.rows.length ||col>table.rows.item(row-1).cells.length){ alert("selected table cell is not exist"); return false; } //alert( t.rows[row-1].cells[col-1].innerHTML); document.getElementById("textForSelect").innerHTML=t.rows[row-1].cells[col-1].innerHTML; } function change(){ var table=document.getElementById("t"); var row = document.getElementById("rowToChange").value; row = parseInt(row); var col=document.getElementById("colToChange").value; col= parseInt(col); if(isNaN(row)){ alert("the input of the row must be a number"); return false; } if(isNaN(col)){ alert("the input of the column must be a number"); return false; } if(row>table.rows.length ||col>table.rows.item(row-1).cells.length){ alert("selected table cell is not exist"); return false; } t.rows[row-1].cells[col-1].innerHTML = document.getElementById("value").value; } function trim(s) { return s.replace(/^\s*/, "").replace(/\s*$/, ""); } function insert(){ var table=document.getElementById("t"); var row = document.getElementById("rowToInsert").value; row = parseInt(row); var firstName = document.getElementById("firstName").value; var lastName = document.getElementById("lastName").value; if(trim(firstName)==null||trim(firstName)==""){ alert("first name can not be empty"); return false; } if(trim(lastName)==null||trim(lastName)==""){ alert("last name can not be empty"); return false; } if(isNaN(row)){ alert("the input of the row must be a number"); return false; } if(row>table.rows.length){ var r = confirm("the row number is bigger than the current table.\n"+"The value will be inserted into the end of the table"); if(r==true){ var r= table.insertRow(table.rows.length); r.insertCell(0).innerHTML = firstName; r.insertCell(1).innerHTML = lastName; }else{ return false; } } var r= table.insertRow(row); r.insertCell(0).innerHTML = firstName; r.insertCell(1).innerHTML = lastName; } function deleteRow(){ var table=document.getElementById("t"); var row = document.getElementById("rowToDelete").value; row = parseInt(row); if(isNaN(row)){ alert("the input of the row must be a number"); return false; } if(row>=table.rows.length){ var r = confirm("the row number is bigger than the current table.\n"+"The lat row will be deleted."); if(r==true){ table.deleteRow(table.rows.length-1); }else{ return false; } } var firstName = table.rows[row].cells[0].innerHTML; var lastName = table.rows[row].cells[1].innerHTML var r = confirm("Do you want to delete the name:'"+firstName+" "+lastName+"' in the table?" ); if(r==true){ table.deleteRow(row); }else{ return false; } } </script>
List in HTML
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Sample List</title> </head> <body> <div id="list"> Courses: <ul id="courses"> <li>Software Engineering</li> <li>Database</li> </ul> </div> <div id="insert"> Insert course's name into the list: <input type="text" id="value" size="20"/> <input type="button" id="btnInsert" value="Insert" onclick="insert()"/> </div> <br/><br/> <div id="insertBefore"> Insert course's name on the top of the list : <input type="text" id="value2" size="20"/> <input type="button" id="btnInsertBefore" value="Insert Before" onclick="insertOnTop()"/> </div> </body> </html>
<script type="text/javascript"> function trim(s) { return s.replace(/^\s*/, "").replace(/\s*$/, ""); } function insert(){ var ul= document.getElementById("courses"); var li = document.createElement("li"); var value = document.getElementById("value").value; if(trim(value)==null||trim(value)==""){ alert("can not insert cours without name"); return false; } li.innerHTML= value; ul.appendChild(li); } function insertOnTop(){ var ul= document.getElementById("courses"); var li = ul.firstChild.nextSibling.cloneNode(false); var value = document.getElementById("value2").value; if(trim(value)==null||trim(value)==""){ alert("can not insert cours without name"); return false; } li.innerHTML= value; ul.insertBefore(li,ul.firstChild); } </script>