The first chapter of JavaScript

Last Update:2017-06-28 Source: Internet

Author: User

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Ch01

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<title></title>
<script type= "Text/javascript" src= "Scripts/common.js" ></script>
<body>
<div id= "Divfirst" >
</div>
<div id= "Divsecond" >
</div>
<div id= "Divthird" >
</div>
<script type= "Text/javascript" >
$ (' Divfirst '). InnerHTML = "<a href= ' http://www.baidu.com ' >go to baidu</a>";
updatehtml (' Divsecond ', ' <input type= ' text "value=" I am text box "/> ');
UPDATETEXT (' Divthird ', ' <pre> text content, not html</pre> ');
WriteHTML (' Hello, classmate! ‘);
Writep ("I am a paragraph content");
Writetable (10, 3);
WriteHTML (getDateString ());
WriteHTML ("<br>");
Writeselectlist ([' BMW ', ' Benz ', ' Audi ']);
Writelist ([' Apple ', ' banana ', ' cat ']);
</script>
<ul>
<li onmouseover= "SetColor (This, ' Red ')" onmouseout= "SetColor (This, ' white ')" >apple</li>
<li onmouseover= "SetColor (This, ' Red ')" onmouseout= "SetColor (This, ' white ')" >banana</li>
<li onmouseover= "SetColor (This, ' Red ')" onmouseout= "SetColor (This, ' white ')" >cat</li>
</ul>
</body>

ch02//getting DOM elements
var $ = function (ID) {
return document.getElementById (ID);
}

Output HTML
var writehtml = function (str) {
document.write (str);
}

Updating element HTML content
var updatehtml = function (id,html) {
$ (id). InnerHTML = html;
}

Update element text content
var updatetext = function (id,text) {
$ (id). InnerText = text;
}

Output paragraph
var writep = function (content) {
WriteHTML ("<p>" + content + "</p>");
}

Output table (row, column)
var writetable = function (row, col) {
WriteHTML ("<table border=1>")
for (var i = 0; i < row; i++) {
WriteHTML ("<tr>");
for (var j = 0; J < Col; J + +) {
WriteHTML ("<td>" + (i + 1). ToString ()
+ "line" + (j + 1). ToString () + "column </td>")
}
WriteHTML ("</tr>");
}
WriteHTML ("</table>");
}

Get current system time
var getdatestring = function () {
return new Date (). toLocaleString ();
}

Change the background color
var setcolor = function (o, color) {
O.style.backgroundcolor = color;
}

Output list
var writelist = function (arr) {
WriteHTML ("<ul>");
for (var i = 0; i < arr.length; i++) {
WriteHTML (' <li> ' + arr[i] + ' </li> ');
}
WriteHTML ("</ul");
}

Output drop-down box
var writeselectlist = function (arr) {
WriteHTML ("<select>");
for (var i = 0; i < arr.length; i++) {
WriteHTML (' <option> ' + arr[i] + ' </option> ')
}
WriteHTML ("</select>");
}

The first chapter of JavaScript

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