Can a selection object be created without any user interaction?
Can a Selection object be created without any user interaction? window.getSelection() does return a Selection object, but you can't modify() it unless the user has some sort of selection made.
Is it possible to create a selection which starts at the very first element on the page and then be able to modify() it, without the need for the user to do anything?
Example: http://jsfiddle.net/niklasvh/L5开发者_C百科M3U/
It doesn't select anything on page load, but if you click on anything it does make a selection.
If I understand what you're asking, then yes, you can programmatically set the selection using its addRange() method. For example, to select the whole of the document's <body> element when the page loads, you could do:
function selectBody() {
var range = document.createRange();
range.selectNode(document.body);
var sel = window.getSelection();
sel.removeAllRanges();
sel.addRange(range);
}
window.onload = selectBody;
This doesn't work on IE < 9, which has a whole different approach to ranges and selections.
加载中,请稍侯......
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