将 JavaScript 变量的输出复制到剪贴板
我对 JavaScript 一无所知,但我设法使用来自各种 Stack Overflow 答案的点点滴滴将这段代码组合在一起.它工作正常,并通过警告框输出文档中所有选定复选框的数组.
I have no knowledge of JavaScript, but I managed to put this code together using bits and bolts from various Stack Overflow answers. It works OK, and it outputs an array of all selected checkboxes in a document via an alert box.
function getSelectedCheckboxes(chkboxName) {
var checkbx = [];
var chkboxes = document.getElementsByName(chkboxName);
var nr_chkboxes = chkboxes.length;
for(var i=0; i<nr_chkboxes; i++) {
if(chkboxes[i].type == 'checkbox' && chkboxes[i].checked == true) checkbx.push(chkboxes[i].value);
}
return checkbx;
}
我用它来称呼它:
<button id="btn_test" type="button" >Check</button>
<script>
document.getElementById('btn_test').onclick = function() {
var checkedBoxes = getSelectedCheckboxes("my_id");
alert(checkedBoxes);
}
</script>
现在我想修改它,所以当我单击 btn_test
按钮时,输出数组 checkbx
被复制到剪贴板.我尝试添加:
Now I would like to modify it so when I click the btn_test
button the output array checkbx
is copied to the clipboard. I tried adding:
checkbx = document.execCommand("copy");
或
checkbx.execCommand("copy");
在函数的末尾,然后像这样调用它:
at the end of the function and then calling it like:
<button id="btn_test" type="button" onclick="getSelectedCheckboxes('my_id')">Check</button>
但它不起作用.没有数据被复制到剪贴板.
But it does not work. No data is copied to clipboard.
推荐答案
好的,我找到了一些时间,并按照 Teemu 我能够得到我想要的.
OK, I found some time and followed the suggestion by Teemu and I was able to get exactly what I wanted.
所以这里是任何可能感兴趣的人的最终代码.为澄清起见,此代码获取某个 ID 的所有选中复选框,将它们输出到一个数组中,此处命名为 checkbx
,然后将它们的唯一名称复制到剪贴板.
So here is the final code for anyone that might be interested. For clarification, this code gets all checked checkboxes of a certain ID, outputs them in an array, named here checkbx
, and then copies their unique name to the clipboard.
JavaScript 函数:
JavaScript function:
function getSelectedCheckboxes(chkboxName) {
var checkbx = [];
var chkboxes = document.getElementsByName(chkboxName);
var nr_chkboxes = chkboxes.length;
for(var i=0; i<nr_chkboxes; i++) {
if(chkboxes[i].type == 'checkbox' && chkboxes[i].checked == true) checkbx.push(chkboxes[i].value);
}
checkbx.toString();
// Create a dummy input to copy the string array inside it
var dummy = document.createElement("input");
// Add it to the document
document.body.appendChild(dummy);
// Set its ID
dummy.setAttribute("id", "dummy_id");
// Output the array into it
document.getElementById("dummy_id").value=checkbx;
// Select it
dummy.select();
// Copy its contents
document.execCommand("copy");
// Remove it as its not needed anymore
document.body.removeChild(dummy);
}
以及它的 HTML 调用:
And its HTML call:
<button id="btn_test" type="button" onclick="getSelectedCheckboxes('ID_of_chkbxs_selected')">Copy</button>
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