天天躁日日躁狠狠躁AV麻豆-天天躁人人躁人人躁狂躁-天天澡夜夜澡人人澡-天天影视香色欲综合网-国产成人女人在线视频观看-国产成人女人视频在线观看

js 使用方法與函數 總結第1/4頁

1 創建腳本塊
1: <script language="JavaScript">
2: JavaScript code goes here
3: </script>
2 隱藏腳本代碼
1: <script language="JavaScript">
2: <!--
3: document.write(“Hello");
4: // -->
5: </script>
在不支持JavaScript的瀏覽器中將不執行相關代碼
3 瀏覽器不支持的時候顯示
1: <noscript>
2: Hello to the non-JavaScript browser.
3: </noscript>
4 鏈接外部腳本文件
1: <script language="JavaScript" src="/"filename.js""></script>
5 注釋腳本
1: // This is a comment
2: document.write(“Hello"); // This is a comment
3: /*
4: All of this
5: is a comment
6: */
6 輸出到瀏覽器
1: document.write(“<strong>Hello</strong>");
7 定義變量
1: var myVariable = “some value";
8 字符串相加
1: var myString = “String1" + “String2";
9 字符串搜索
1: <script language="JavaScript">
2: <!--
3: var myVariable = “Hello there";
4: var therePlace = myVariable.search(“there");
5: document.write(therePlace);
6: // -->
7: </script>
10 字符串替換
1: thisVar.replace(“Monday","Friday");
11 格式化字串
1: <script language="JavaScript">
2: <!--
3: var myVariable = “Hello there";
4: document.write(myVariable.big() + “<br>");
5: document.write(myVariable.blink() + “<br>");
6: document.write(myVariable.bold() + “<br>");
7: document.write(myVariable.fixed() + “<br>");
8: document.write(myVariable.fontcolor(“red") + “<br>");
9: document.write(myVariable.fontsize(“18pt") + “<br>");
10: document.write(myVariable.italics() + “<br>");
11: document.write(myVariable.small() + “<br>");
12: document.write(myVariable.strike() + “<br>");
13: document.write(myVariable.sub() + “<br>");
14: document.write(myVariable.sup() + “<br>");
15: document.write(myVariable.toLowerCase() + “<br>");
16: document.write(myVariable.toUpperCase() + “<br>");
17:
18: var firstString = “My String";
19: var finalString = firstString.bold().toLowerCase().fontcolor(“red");
20: // -->
21: </script>
12 創建數組
1: <script language="JavaScript">
2: <!--
3: var myArray = new Array(5);
4: myArray[0] = “First Entry";
5: myArray[1] = “Second Entry";
6: myArray[2] = “Third Entry";
7: myArray[3] = “Fourth Entry";
8: myArray[4] = “Fifth Entry";
9: var anotherArray = new Array(“First Entry","Second Entry","Third Entry","Fourth Entry","Fifth Entry");
10: // -->
11: </script>
13 數組排序
1: <script language="JavaScript">
2: <!--
3: var myArray = new Array(5);
4: myArray[0] = “z";
5: myArray[1] = “c";
6: myArray[2] = “d";
7: myArray[3] = “a";
8: myArray[4] = “q";
9: document.write(myArray.sort());
10: // -->
11: </script>
14 分割字符串
1: <script language="JavaScript">
2: <!--
3: var myVariable = “a,b,c,d";
4: var stringArray = myVariable.split(“,");
5: document.write(stringArray[0]);
6: document.write(stringArray[1]);
7: document.write(stringArray[2]);
8: document.write(stringArray[3]);
9: // -->
10: </script>
15 彈出警告信息
1: <script language="JavaScript">
2: <!--
3: window.alert(“Hello");
4: // -->
5: </script>
16 彈出確認框
1: <script language="JavaScript">
2: <!--
3: var result = window.confirm(“Click OK to continue");
4: // -->
5: </script>
17 定義函數
1: <script language="JavaScript">
2: <!--
3: function multiple(number1,number2) {
4: var result = number1 * number2;
5: return result;
6: }
7: // -->
8: </script>
18 調用JS函數
1: <a href="#" onClick="functionName()">Link text</a>
2: <a href="/"Javascript:functionName"()">Link text</a>
19 在頁面加載完成后執行函數
1: <body onLoad="functionName();">
2: Body of the page
3: </body>
20 條件判斷
1: <script>
2: <!--
3: var userChoice = window.confirm(“Choose OK or Cancel");
4: var result = (userChoice == true) ? “OK" : “Cancel";
5: document.write(result);
6: // -->
7: </script>
21 指定次數循環
1: <script>
2: <!--
3: var myArray = new Array(3);
4: myArray[0] = “Item 0";
5: myArray[1] = “Item 1";
6: myArray[2] = “Item 2";
7: for (i = 0; i < myArray.length; i++) {
8: document.write(myArray[i] + “<br>");
9: }
10: // -->
11: </script>
22 設定將來執行
1: <script>
2: <!--
3: function hello() {
4: window.alert(“Hello");
5: }
6: window.setTimeout(“hello()",5000);
7: // -->
8: </script>
23 定時執行函數
1: <script>
2: <!--
3: function hello() {
4: window.alert(“Hello");
5: window.setTimeout(“hello()",5000);
6: }
7: window.setTimeout(“hello()",5000);
8: // -->
9: </script>
24 取消定時執行
1: <script>
2: <!--
3: function hello() {
4: window.alert(“Hello");
5: }
6: var myTimeout = window.setTimeout(“hello()",5000);
7: window.clearTimeout(myTimeout);
8: // -->
9: </script>
25 在頁面卸載時候執行函數
1: <body onUnload="functionName();">
2: Body of the page
3: </body>

JavaScript技術js 使用方法與函數 總結第1/4頁,轉載需保留來源!

鄭重聲明:本文版權歸原作者所有,轉載文章僅為傳播更多信息之目的,如作者信息標記有誤,請第一時間聯系我們修改或刪除,多謝。

主站蜘蛛池模板: 四库影院永久国产精品 | 日本精品久久久久中文字幕 1 | 久久99热这里只频精品6 | 久久www99re在线播放 | 私人玩物在线观看 | 厨房玩朋友娇妻中文字幕 | 99久久国产综合精品 | 成人欧美一区二区三区白人 | 99热久久久无码国产精品性麻豆 | 好硬好湿好爽再深一点视频 | 亚洲 视频 在线 国产 精品 | 中文字幕一区二区三区在线不卡 | 免费亚洲视频 | 国产高清精品自在久久 | 色多多污版app下载网站 | 亚州精品视频 | china男士同性视频tv | 亚洲伊人精品 | 国产精品亚洲二线在线播放 | 古月娜下面好紧好爽 | 亚洲激情网站 | 国产99视频精品免费播放 | 富婆大保健嗷嗷叫普通话对白 | 日韩欧美视频一区二区 | 恋夜直播午夜秀场最新 | 男插女高潮一区二区 | 丰满人妻无码AV系列 | 欧美激情一区二区三区AA片 | 在线中文高清资源免费观看 | 娇妻中日久久持久久 | 久久久久久免费观看 | 久久久无码精品无码国产人妻丝瓜 | 国产免国产免费 | 国产人妻午夜无码AV天堂 | 午夜小视频免费观看 | 成人影院午夜久久影院 | xxxxhdvideos动漫 | 久久成人免费观看草草影院 | 九九热视频在线观看 | 精品久久久久久综合网 | 精品无码久久久久久久动漫 |