实时编辑网页网页文字实时编辑，如同TEXTBOX一般_javascript技巧

来源：步遥情感网

} 
input, textarea, pre{ 
 font-family: verdana; 
 font-size: inherit; 
 font-family: inherit; 
} 
label{ 
 width: 110px; 
} 
#userName, #userName_field{ 
 font-size: 14px; 
} 
#cityName, #cityName_field{ 
 font-size: 14px; 
 background-color: #333; 
 color: #fff; 
} 
#blogTitle, #blogTitle_field{

font-size: 24px; 
} 
#blogText, #blogText_field{

width: 240px; 
}

#lorumText, #lorumText_field{ 
 width: 500px;

} 
</style> 
 
function datosServidor() { 
}; 
datosServidor.prototype.iniciar = function() { 
 try { 
 // Mozilla / Safari 
 this._xh = new XMLHttpRequest(); 
 } catch (e) { 
 // Explorer 
 var _ieModelos = new Array( 
 'MSXML2.XMLHTTP.5.0', 
 'MSXML2.XMLHTTP.4.0', 
 'MSXML2.XMLHTTP.3.0', 
 'MSXML2.XMLHTTP', 
 'Microsoft.XMLHTTP' 
 ); 
 var success = false; 
 for (var i=0;i < _ieModelos.length && !success; i++) { 
 try { 
 this._xh = new ActiveXObject(_ieModelos[i]); 
 success = true; 
 } catch (e) { 
 // Implementar manejo de excepciones 
 } 
 } 
 if ( !success ) { 
 // Implementar manejo de excepciones, mientras alerta. 
 return false; 
 } 
 return true; 
 } 
}

datosServidor.prototype.ocupado = function() { 
 estadoActual = this._xh.readyState; 
 return (estadoActual && (estadoActual < 4)); 
}

datosServidor.prototype.procesa = function() { 
 if (this._xh.readyState == 4 && this._xh.status == 200) { 
 this.procesado = true; 
 } 
}

datosServidor.prototype.enviar = function(urlget,datos) { 
 if (!this._xh) { 
 this.iniciar(); 
 } 
 if (!this.ocupado()) { 
 this._xh.open("GET",urlget,false); 
 this._xh.send(datos); 
 if (this._xh.readyState == 4 && this._xh.status == 200) { 
 return this._xh.responseText; 
 } 
 
 } 
 return false; 
}

var urlBase = "update.php"; 
var formVars = ""; 
var changing = false;

function fieldEnter(campo,evt,idfld) { 
 evt = (evt) ? evt : window.event; 
 if (evt.keyCode == 13 && campo.value!="") { 
 elem = document.getElementById( idfld ); 
 remotos = new datosServidor; 
 nt = remotos.enviar(urlBase + "?fieldname=" +escape(elem.id)+ "&content="+escape(campo.value)+"&"+formVars,""); 
 //remove glow 
 noLight(elem); 
 elem.innerHTML = nt; 
 changing = false; 
 return false; 
 } else { 
 return true; 
 }

}

function fieldBlur(campo,idfld) { 
 if (campo.value!="") { 
 elem = document.getElementById( idfld ); 
 remotos = new datosServidor; 
 nt = remotos.enviar(urlBase + "?fieldname=" +escape(elem.id)+ "&content="+escape(campo.value)+"&"+formVars,""); 
 elem.innerHTML = nt; 
 changing = false; 
 return false; 
 } 
}

//edit field created 
function cambia(actual) { 
 if(!changing){ 
 width = widthEl(actual.id) + 20; 
 height =heightEl(actual.id) + 2; 
 if(width < 100) 
 width = 150; 
 if(height < 40) 
 actual.innerHTML = "<input id=\""+ actual.id +"_field\" style=\"width: "+width+"px; height: "+height+"px;\" maxlength=\"254\" type=\"text\" value=\"" + actual.innerHTML + "\" onkeypress=\"return fieldEnter(this,event,'" + actual.id + "')\" onfocus=\"highLight(this);\" onblur=\"noLight(this); return fieldBlur(this,'" + actual.id + "');\" />"; 
 else 
 actual.innerHTML = "<textarea name=\"textarea\" id=\""+ actual.id +"_field\" style=\"width: "+width+"px; height: "+height+"px;\" onfocus=\"highLight(this);\" onblur=\"noLight(this); return fieldBlur(this,'" + actual.id + "');\">" + actual.innerHTML + "</textarea>"; 
 
 changing = true; 
 }

actual.firstChild.focus(); 
}

//find all span tags with class editText and id as fieldname parsed to update script. add onclick function 
function editbox_init(){ 
 if (!document.getElementsByTagName){ return; } 
 var spans = document.getElementsByTagName("span");

// loop through all span tags 
 for (var i=0; i 
 
setVarsForm("pageID=profileEdit&userID=11&sessionID=28ydk3478Hefwedkbj73bdIB8H"); 
</ script> 
<label>Your name:</label> John Doe
 
<label>Your city:</label> Rotterdam, NL

<hr /> 
<h2>AJAX instant edit script - clean HTML</h2> 
Welcome to my blog. Today i created this instant

update script. Click here to try! If you like it you can download and view the source at:

yvoschaap.com. Have fun and success. 
<p>Message of the day:Time Spend Wishing, Is

Time Wasted</p> 
<hr> 
Check the source code of this page. No crazy JS!!

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egestas magna et risus.

Etiam velit tellus, sagittis eget, pretium eu, sagittis ut, sem. Aliquam est. Nam

condimentum. In massa ligula, varius in, aliquet vehicula, facilisis id, ante. Sed purus.

Vestibulum tempus facilisis lectus. Phasellus convallis, lorem in bibendum convallis, nunc

nisl fringilla sem, ut nonummy turpis nunc sed risus. Aliquam bibendum semper ipsum.

In hac habitasse platea dictumst. Maecenas vulputate, nisl nec tempus rutrum, tortor ligula

interdum urna, eget porttitor risus sem eu odio.

Nullam vel leo sed enim sodales euismod. Phasellus volutpat purus sit amet erat. Nulla ut

enim. Nullam tempus enim eget lacus. Nulla a nibh eu enim bibendum bibendum. Nunc justo.

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sagittis aliquam. Duis vitae nulla. Nam sed nibh. Mauris fermentum sodales nulla. Nam

fringilla. In hac habitasse platea dictumst. Aliquam erat volutpat. Fusce consectetuer. <br

/> 
 
<hr>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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实时编辑网页网页文字实时编辑，如同TEXTBOX一般_javascript技巧