我已经修改了这些的各种版本,以提出一个版本,将第一个文本放置在所选内容之前,第二个文本放在所选内容之后并保留所选内容。这工作在铬和FF,而不是在IE中。
jQuery.fn.extend({
insertAtCaret: function(myValue, myValueE){
return this.each(function(i) {
if (document.selection) {
//For browsers like Internet Explorer
this.focus();
sel = document.selection.createRange();
sel.text = myValue + myValueE;
this.focus();
}
else if (this.selectionStart || this.selectionStart == '0') {
//For browsers like Firefox and Webkit based
var startPos = this.selectionStart;
var endPos = this.selectionEnd;
var scrollTop = this.scrollTop;
this.value = this.value.substring(0, startPos)+myValue+this.value.substring(startPos,endPos)+myValueE+this.value.substring(endPos,this.value.length);
this.focus();
this.selectionStart = startPos + myValue.length;
this.selectionEnd = ((startPos + myValue.length) + this.value.substring(startPos,endPos).length);
this.scrollTop = scrollTop;
} else {
this.value += myValue;
this.focus();
}
})
}
});
用法: $('#box').insertAtCaret("[Before selection]", "[after]");
另外:不以任何方式声称这是我的。
[插入文本到jQuery的文本到textarea](http://stackoverflow.com/questions/946534/insert-text-into-textarea-with-jquery) – bummi 2013-12-02 14:36:14