我有一个文本框。 当我写第一个文本时, Java 脚本功能会点火检查它是否是一个数字 。
对于 IE, 以下代码返回 -1 值, 但其它浏览器没有提醒任何值。 请帮助我
var selected = document.selection.createRange();
var decInSel = selected.text.indexOf( . );
hasNegInSel = selected.text.indexOf( - ) != -1;
alert(decInSel);
我有一个文本框。 当我写第一个文本时, Java 脚本功能会点火检查它是否是一个数字 。
对于 IE, 以下代码返回 -1 值, 但其它浏览器没有提醒任何值。 请帮助我
var selected = document.selection.createRange();
var decInSel = selected.text.indexOf( . );
hasNegInSel = selected.text.indexOf( - ) != -1;
alert(decInSel);
document. sselect. createRange ()
is IE & lt; 9 仅... 您为交叉浏览器支持设置以下函数 。
function getSelectedText() {
if (window.getSelection) { // all browsers, except IE before version 9
var selectionRange = window.getSelection ();
return selectionRange.toString();
} else {
if (document.selection.type == None ) {
return "";
} else {
var textRange = document.selection.createRange();
return textRange.text;
}
}
}
"http://help.dottoro.com/ljefwsqm.php" rel="无跟随" >这里的参考
所以,你的完整的代码 会看起来像这个:
var selected = getSelectedText()
var decInSel = selected.indexOf( . );
hasNegInSel = selected.indexOf( - ) != -1;
alert(decInSel);
其它浏览器使用文本框的 selectiveStart
和 selectEnd
属性。 您可以使用以下方法在这些浏览器中的文本框中获取选中文本 :
var input = document.getElementById("textBox");
var selectedText = input.value.slice(input.selectionStart, input.selectionEnd);
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