一、返回createTextRange的text和htmlText
<mce:script language="javascript"><!--
function test(){ var rng=document.body.createTextRange();alert(rng.text)}function test1(){ var rng=document.body.createTextRange();alert(rng.htmlText)}// --></mce:script><input type="button" οnclick="test()" value="text"><input type="button" οnclick="test1()" value="htmlText"> 二、获取指定文本框中的选中的文字：只响应第一个文本框<input id="inp1" type="text" value="1234567890">
<input id="inp2" type="text" value="9876543210"><input type="button" οnclick="test()" value="确定"><mce:script language="javascript"><!--function test(){ var o=document.getElementById("inp1")var r = document.selection.createRange();if(o.createTextRange().inRange(r))alert(r.text);}// --></mce:script> 三、页面文本倒序查找abababababababa
<input value="倒序查找a" οnclick=myfindtext("a") type="button"><mce:script language ='javascript'><!--var rng = document.body.createTextRange();function myfindtext(text){ rng.collapse(false);if(rng.findText(text,-1,1)){ rng.select();rng.collapse(true);}else{alert("end");}}// --></mce:script> 四、聚焦控件后把光标放到最后<mce:script language="javascript"><!--
function setFocus(){ var obj = event.srcElement;var txt =obj.createTextRange();txt.moveStart('character',obj.value.length);txt.collapse(true);txt.select();}// --></mce:script><input type="text" value="http://toto369.net" οnfοcus="setFocus()"> 五、得到文本框内光标位置<mce:script language="javascript"><!--
function getPos(obj){ obj.focus();var s=document.selection.createRange();s.setEndPoint("StartToStart",obj.createTextRange())alert(s.text.length);}// --></mce:script><input type="text" id="txt1" value="1234567890"><input type="button" value="得到光标位置" οnclick=getPos(txt1)> 六、控制input框内光标位置<mce:script language="javascript"><!--
function setPos(num){ text1.focus();var e =document.getElementById("text1");var r =e.createTextRange();r.moveStart('character',num);r.collapse(true);r.select();}// --></mce:script><input type="text" id="text1" value="1234567890"><select οnchange="setPos(this.selectedIndex)"><option value="0">0</option><option value="1">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option><option value="5">5</option><option value="6">6</option><option value="7">7</option></select> 七、选中文本框中的一段文字<mce:script language=javascript><!--
function sel(obj,num){ var rng=obj.createTextRange()var sel = rng.duplicate();sel.moveStart("character", num);sel.setEndPoint("EndToStart", rng);sel.select();}// --></mce:script><input type="text" id="text1" value="1234567890"><select οnchange="sel(text1,this.value)"><option value="0">0</option><option value="1">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option><option value="5">5</option><option value="6">6</option><option value="7">7</option></select> 八、控制文本框内光标的移动<input type="button" value="<" οnclick=go(-1)>
<input id="demo" value="这里是文字"><input type="button" value=">" οnclick=go(1)><mce:script language="javascript"><!--function go(n){ demo.focus();with(document.selection.createRange()){ moveStart("character",n);collapse();select();}}// --></mce:script>九、取光标位置
<body><div id=box>点击textarea</div> <mce:script type="text/javascript"><!--function doit(){ var rng = event.srcElement.createTextRange(); rng.moveToPoint(event.x,event.y); rng.moveEnd("character",event.srcElement.value.length) box.innerText = "光标位置：" + (event.srcElement.value.length - rng.text.length)}// --></mce:script><textarea οnclick=doit() rows="6" cols="33">sdfsdfsdfsdfsdfsdfsdf