首頁 > 開發者 > JavaScript
<html>
<head>
<title>查詢當前選定的文本樣本</title>
<script type="text/javascript">
function getSelectedText() { // 擷取使用者選定的文本；
var result = "";
if(window.getSelection) {
result = window.getSelection().toString();
result += "\n _window.getSelection()";
} else if(document.getSelection) {
result = document.getSelection();
result += "\n _document.getSelection()";
} else if(document.selection) {
result = document.selection.createRange().text;
result += "\n _document.selection.createRange().text";
}
if(window.addEventListener) {
console.log(result);
}else if(window.attachEvent) {
alert(result);
}
}
// 文本輸入元素處理
function getTextFieldSelection(e) {
if(e.selectionStart != undefined && e.selectionEnd != undefined) {
var start = e.selectionStart;
console.log("start_" + start);
var end = e.selectionEnd;
console.log("end_" + end);
var strOut = e.value.substring(start, end);
console.log(strOut);
} else {
console.log("Not supported on this browser.");
}
}
</script>
</head>
<body>
<p>我愛我，老婆！</p><br>
<a href="javascript:
var q;
if(window.getSelection) {
q = window.getSelection().toString();
}else if(document.getSelection) {
q = document.getSelection();
}else if(document.selection) {
q = document.selection.createRange().text;
}
void window.open('http://zh.wikipedia.org/wiki/' + q);
">在維基百科中尋找所選定的文本資訊</a>
<button onclick="getSelectedText()">擷取選定文本</button><br>
<label for="textname">看看是否能擷取裡邊的文本：</label>
<input type="text" name="textname" value = "i love you!" size="23" />
<p><b>相容性問題說明：</b>如果選定的文本在一個input或textarea表單元素中，Window和Document對象的getSelection()方法不會返回它，
它們只能從文檔自身的內容中返回選擇的文本。但是IE的document.selection屬性則會從文檔中的任何地方返回選擇的文本。</p>
<label for="filename">文本輸入元素的處理：</label>
<input type="text" name="filename" size="23" /><input type="button" value="元素處理" onclick = "getTextFieldSelection(event)" />
</body>
</html>
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