javascript 使剪贴板复制粘贴在 iphone 设备上工作
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Make clipboard copy-paste work on iphone devices
提问by Anna Gabrielyan
I have web application, which is mostly designed to be run on mobile devices. I have one button, which will copy to device clipboard the passed text. I am using javascript for that. My code is working great on all mobile devices, except for iphone and ipad. Anybody knows what can be the problem? Here is my code:
我有 Web 应用程序，它主要设计为在移动设备上运行。我有一个按钮，它会将传递的文本复制到设备剪贴板。我为此使用了 javascript。我的代码在所有移动设备上都运行良好，除了 iphone 和 ipad。有谁知道可能是什么问题？这是我的代码：
CopyToClipboard = function(text, fallback){
var $t = $('<textarea />');
$t.val(text).appendTo('body');
$t.select();
document.execCommand('copy');
$t.remove();
return true;
};
I have also tried to go this way, but no result, still not working on iphone
我也尝试过这种方式，但没有结果，仍然无法在 iphone 上工作
function detectIE() {
var ua = window.navigator.userAgent;
var msie = ua.indexOf('MSIE ');
if (msie > 0) {
// IE 10 or older => return version number
return parseInt(ua.substring(msie + 5, ua.indexOf('.', msie)), 10);
}
var trident = ua.indexOf('Trident/');
if (trident > 0) {
// IE 11 => return version number
var rv = ua.indexOf('rv:');
return parseInt(ua.substring(rv + 3, ua.indexOf('.', rv)), 10);
}
var edge = ua.indexOf('Edge/');
if (edge > 0) {
// IE 12 => return version number
return parseInt(ua.substring(edge + 5, ua.indexOf('.', edge)), 10);
}
// other browser
return false;
}
function copytext(text) {
if (detectIE()) {
window.clipboardData.setData('Text', text);
}
var textField = document.createElement('textarea');
textField.innerText = text;
document.body.appendChild(textField);
textField.select();
document.execCommand('copy');
window.clipboardData.setData('Text', copytext);
textField.remove();
}
function copytext(text) {
var textField = document.createElement('textarea');
textField.innerText = text;
document.body.appendChild(textField);
textField.select();
document.execCommand('copy');
$(textField).remove();
}
回答by Rikard Askel?f
Try this. Works for me.
试试这个。对我来说有效。
var copy = function(elementId) {
var input = document.getElementById(elementId);
var isiOSDevice = navigator.userAgent.match(/ipad|iphone/i);
if (isiOSDevice) {
var editable = input.contentEditable;
var readOnly = input.readOnly;
input.contentEditable = true;
input.readOnly = false;
var range = document.createRange();
range.selectNodeContents(input);
var selection = window.getSelection();
selection.removeAllRanges();
selection.addRange(range);
input.setSelectionRange(0, 999999);
input.contentEditable = editable;
input.readOnly = readOnly;
} else {
input.select();
}
document.execCommand('copy');
}<input type="text" id="foo" value="text to copy" />
<button onclick="copy('foo')">Copy text</button>回答by Cube.
According to CanIUse, Safari on iOS doesn't support document.execCommand('copy'), probably because of security reasons.
根据CanIUse 的说法，iOS 上的 Safari 不支持document.execCommand('copy')，可能是出于安全原因。
