Ist es möglich, Text in einem Textfeld mit Javascript zu markieren? Entweder ändern Sie den Hintergrund nur eines Teils des Textbereichs oder machen Sie einen Teil des Textes ausgewählt? dieses Stück CodeText innerhalb eines Textfelds hervorheben
Versuchen ich heute morgen geschrieben, es wird eine definierte Menge von Wörtern hervorheben:
<html>
<head>
<title></title>
<!-- Load jQuery -->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
<!-- The javascript xontaining the plugin and the code to init the plugin -->
<script type="text/javascript">
$(function() {
// let's init the plugin, that we called "highlight".
// We will highlight the words "hello" and "world",
// and set the input area to a widht and height of 500 and 250 respectively.
$("#container").highlight({
words: ["hello","world"],
width: 500,
height: 250
});
});
// the plugin that would do the trick
(function($){
$.fn.extend({
highlight: function() {
// the main class
var pluginClass = function() {};
// init the class
// Bootloader
pluginClass.prototype.__init = function (element) {
try {
this.element = element;
} catch (err) {
this.error(err);
}
};
// centralized error handler
pluginClass.prototype.error = function (e) {
// manage error and exceptions here
//console.info("error!",e);
};
// Centralized routing function
pluginClass.prototype.execute = function (fn, options) {
try {
options = $.extend({},options);
if (typeof(this[fn]) == "function") {
var output = this[fn].apply(this, [options]);
} else {
this.error("undefined_function");
}
} catch (err) {
this.error(err);
}
};
// **********************
// Plugin Class starts here
// **********************
// init the component
pluginClass.prototype.init = function (options) {
try {
// the element's reference ($("#container")) is stored into "this.element"
var scope = this;
this.options = options;
// just find the different elements we'll need
this.highlighterContainer = this.element.find('#highlighterContainer');
this.inputContainer = this.element.find('#inputContainer');
this.textarea = this.inputContainer.find('textarea');
this.highlighter = this.highlighterContainer.find('#highlighter');
// apply the css
this.element.css('position','relative');
// place both the highlight container and the textarea container
// on the same coordonate to superpose them.
this.highlighterContainer.css({
'position': 'absolute',
'left': '0',
'top': '0',
'border': '1px dashed #ff0000',
'width': this.options.width,
'height': this.options.height,
'cursor': 'text'
});
this.inputContainer.css({
'position': 'absolute',
'left': '0',
'top': '0',
'border': '1px solid #000000'
});
// now let's make sure the highlit div and the textarea will superpose,
// by applying the same font size and stuffs.
// the highlighter must have a white text so it will be invisible
this.highlighter.css({
'padding': '7px',
'color': '#eeeeee',
'background-color': '#ffffff',
'margin': '0px',
'font-size': '11px',
'font-family': '"lucida grande",tahoma,verdana,arial,sans-serif'
});
// the textarea must have a transparent background so we can see the highlight div behind it
this.textarea.css({
'background-color': 'transparent',
'padding': '5px',
'margin': '0px',
'font-size': '11px',
'width': this.options.width,
'height': this.options.height,
'font-family': '"lucida grande",tahoma,verdana,arial,sans-serif'
});
// apply the hooks
this.highlighterContainer.bind('click', function() {
scope.textarea.focus();
});
this.textarea.bind('keyup', function() {
// when we type in the textarea,
// we want the text to be processed and re-injected into the div behind it.
scope.applyText($(this).val());
});
} catch (err) {
this.error(err);
}
return true;
};
pluginClass.prototype.applyText = function (text) {
try {
var scope = this;
// parse the text:
// replace all the line braks by <br/>, and all the double spaces by the html version
text = this.replaceAll(text,'\n','<br/>');
text = this.replaceAll(text,' ',' ');
// replace the words by a highlighted version of the words
for (var i=0;i<this.options.words.length;i++) {
text = this.replaceAll(text,this.options.words[i],'<span style="background-color: #D8DFEA;">'+this.options.words[i]+'</span>');
}
// re-inject the processed text into the div
this.highlighter.html(text);
} catch (err) {
this.error(err);
}
return true;
};
// "replace all" function
pluginClass.prototype.replaceAll = function(txt, replace, with_this) {
return txt.replace(new RegExp(replace, 'g'),with_this);
}
// don't worry about this part, it's just the required code for the plugin to hadle the methods and stuffs. Not relevant here.
//**********************
// process
var fn;
var options;
if (arguments.length == 0) {
fn = "init";
options = {};
} else if (arguments.length == 1 && typeof(arguments[0]) == 'object') {
fn = "init";
options = $.extend({},arguments[0]);
} else {
fn = arguments[0];
options = $.extend({},arguments[1]);
}
$.each(this, function(idx, item) {
// if the component is not yet existing, create it.
if ($(item).data('highlightPlugin') == null) {
$(item).data('highlightPlugin', new pluginClass());
$(item).data('highlightPlugin').__init($(item));
}
$(item).data('highlightPlugin').execute(fn, options);
});
return this;
}
});
})(jQuery);
</script>
</head>
<body>
<div id="container">
<div id="highlighterContainer">
<div id="highlighter">
</div>
</div>
<div id="inputContainer">
<textarea cols="30" rows="10">
</textarea>
</div>
</div>
</body>
</html>
Dies wurde für einen anderen Beitrag geschrieben (http://facebook.stackoverflow.com/questions/7497824/how-to-highlight-freunde-name-in-facebook-status-update-box-textarea/7597420 # 7597420), aber es scheint, was du suchst.
Kühl. Gibt es eine Möglichkeit, dass das Skript zu dieser Zeichenfolge bearbeitet werden könnte, anstatt nur einzelne Wörter hervorgehoben werden könnten? Ich merke, dass wenn ich eine Phrase wie "New York Yankees" hervorheben möchte, es nicht funktioniert? Irgendwelche Ideen? – Lance
Verbesserte Version von oben, funktioniert auch mit Regex und mehr Textfeldern:
<html>
<head>
<title></title>
<!-- Load jQuery -->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
<!-- The javascript xontaining the plugin and the code to init the plugin -->
<script type="text/javascript">
$(function() {
// let's init the plugin, that we called "highlight".
// We will highlight the words "hello" and "world",
// and set the input area to a widht and height of 500 and 250 respectively.
$("#container0").highlight({
words: [["hello","hello"],["world","world"],["(\\[b])(.+?)(\\[/b])","$1$2$3"]],
width: 500,
height: 125,
count:0
});
$("#container1").highlight({
words: [["hello","hello"],["world","world"],["(\\[b])(.+?)(\\[/b])","$1$2$3"]],
width: 500,
height: 125,
count: 1
});
});
// the plugin that would do the trick
(function($){
$.fn.extend({
highlight: function() {
// the main class
var pluginClass = function() {};
// init the class
// Bootloader
pluginClass.prototype.__init = function (element) {
try {
this.element = element;
} catch (err) {
this.error(err);
}
};
// centralized error handler
pluginClass.prototype.error = function (e) {
// manage error and exceptions here
//console.info("error!",e);
};
// Centralized routing function
pluginClass.prototype.execute = function (fn, options) {
try {
options = $.extend({},options);
if (typeof(this[fn]) == "function") {
var output = this[fn].apply(this, [options]);
} else {
this.error("undefined_function");
}
} catch (err) {
this.error(err);
}
};
// **********************
// Plugin Class starts here
// **********************
// init the component
pluginClass.prototype.init = function (options) {
try {
// the element's reference ($("#container")) is stored into "this.element"
var scope = this;
this.options = options;
// just find the different elements we'll need
this.highlighterContainer = this.element.find('#highlighterContainer'+this.options.count);
this.inputContainer = this.element.find('#inputContainer'+this.options.count);
this.textarea = this.inputContainer.find('textarea');
this.highlighter = this.highlighterContainer.find('#highlighter'+this.options.count);
// apply the css
this.element.css({'position':'relative',
'overflow':'auto',
'background':'none repeat scroll 0 0 #FFFFFF',
'height':this.options.height+2,
'width':this.options.width+19,
'border':'1px solid'
});
// place both the highlight container and the textarea container
// on the same coordonate to superpose them.
this.highlighterContainer.css({
'position': 'absolute',
'left': '0',
'top': '0',
'border': '1px dashed #ff0000',
'width': this.options.width,
'height': this.options.height,
'cursor': 'text',
'z-index': '1'
});
this.inputContainer.css({
'position': 'absolute',
'left': '0',
'top': '0',
'border': '0px solid #000000',
'z-index': '2',
'background': 'none repeat scroll 0 0 transparent'
});
// now let's make sure the highlit div and the textarea will superpose,
// by applying the same font size and stuffs.
// the highlighter must have a white text so it will be invisible
var isWebKit = navigator.userAgent.indexOf("WebKit") > -1,
isOpera = navigator.userAgent.indexOf("Opera") > -1,
isIE /*@cc_on = true @*/,
isIE6 = isIE && !window.XMLHttpRequest; // Despite the variable name, this means if IE lower than v7
if (isIE || isOpera){
var padding = '6px 5px';
}
else {
var padding = '5px 6px';
}
this.highlighter.css({
'padding': padding,
'color': '#eeeeee',
'background-color': '#ffffff',
'margin': '0px',
'font-size': '11px' ,
'line-height': '12px' ,
'font-family': '"lucida grande",tahoma,verdana,arial,sans-serif'
});
// the textarea must have a transparent background so we can see the highlight div behind it
this.textarea.css({
'background-color': 'transparent',
'padding': '5px',
'margin': '0px',
'width': this.options.width,
'height': this.options.height,
'font-size': '11px',
'line-height': '12px' ,
'font-family': '"lucida grande",tahoma,verdana,arial,sans-serif',
'overflow': 'hidden',
'border': '0px solid #000000'
});
// apply the hooks
this.highlighterContainer.bind('click', function() {
scope.textarea.focus();
});
this.textarea.bind('keyup', function() {
// when we type in the textarea,
// we want the text to be processed and re-injected into the div behind it.
scope.applyText($(this).val());
});
scope.applyText(this.textarea.val());
} catch (err) {
this.error(err)
}
return true;
};
pluginClass.prototype.applyText = function (text) {
try {
var scope = this;
// parse the text:
// replace all the line braks by <br/>, and all the double spaces by the html version
text = this.replaceAll(text,'\n','<br/>');
text = this.replaceAll(text,' ',' ');
text = this.replaceAll(text,' ',' ');
// replace the words by a highlighted version of the words
for (var i=0;i<this.options.words.length;i++) {
text = this.replaceAll(text,this.options.words[i][0],'<span style="background-color: #D8DFEA;">'+this.options.words[i][1]+'</span>');
//text = this.replaceAll(text,'(\\[b])(.+?)(\\[/b])','<span style="font-weight:bold;background-color: #D8DFEA;">$1$2$3</span>');
}
// re-inject the processed text into the div
this.highlighter.html(text);
if (this.highlighter[0].clientHeight > this.options.height) {
// document.getElementById("highlighter0")
this.textarea[0].style.height=this.highlighter[0].clientHeight +19+"px";
}
else {
this.textarea[0].style.height=this.options.height;
}
} catch (err) {
this.error(err);
}
return true;
};
// "replace all" function
pluginClass.prototype.replaceAll = function(txt, replace, with_this) {
return txt.replace(new RegExp(replace, 'g'),with_this);
}
// don't worry about this part, it's just the required code for the plugin to hadle the methods and stuffs. Not relevant here.
//**********************
// process
var fn;
var options;
if (arguments.length == 0) {
fn = "init";
options = {};
} else if (arguments.length == 1 && typeof(arguments[0]) == 'object') {
fn = "init";
options = $.extend({},arguments[0]);
} else {
fn = arguments[0];
options = $.extend({},arguments[1]);
}
$.each(this, function(idx, item) {
// if the component is not yet existing, create it.
if ($(item).data('highlightPlugin') == null) {
$(item).data('highlightPlugin', new pluginClass());
$(item).data('highlightPlugin').__init($(item));
}
$(item).data('highlightPlugin').execute(fn, options);
});
return this;
}
});
})(jQuery);
</script>
</head>
<body>
<div id="container0">
<div id="highlighterContainer0">
<div id="highlighter0"></div>
</div>
<div id="inputContainer0">
<textarea id="text1" cols="30" rows="15">hello world</textarea>
</div>
</div>
<h1> haus </h1>
<div id="container1">
<div id="highlighterContainer1">
<div id="highlighter1"></div>
</div>
<div id="inputContainer1">
<textarea cols="30" rows="15">hipp hipp
hurra,
[b]ich hab es jetzt![/b]</textarea>
</div>
</div>
</body>
Wäre schöner, dies in einer Fiddle oder ähnlichem zu haben. –
Einfachen Skript, das ich für diese schrieb: Jsfiddle
OPTIONEN:
Strg + Umschalttaste für Richtungswechsel.
//include function like in the fiddle!
//CREATE ELEMENT:
create_bind_textarea_highlight({
eleId:"wrap_all_highlighter",
width:400,
height:110,
padding:5,
background:'white',
backgroundControls:'#585858',
radius:5,
fontFamilly:'Arial',
fontSize:13,
lineHeight:18,
counterlettres:true,
counterFont:'red',
matchpatterns:[["(#[0-9A-Za-z]{0,})","$1"],["(@[0-9A-Za-z]{0,})","$1"]],
hightlightsColor:['#00d2ff','#FFBF00'],
objectsCopy:["copy_hashes","copy_at"]
//PRESS Ctrl + SHIFT for direction swip!
});
//HTML EXAMPLE:
<div id="wrap_all_highlighter" placer='1'></div>
<div id='copy_hashes'></div><!--Optional-->
<div id='copy_at'></div><!--Optional-->
Spaß zu haben!
das ist gut, aber was passiert, wenn Benutzer Vorname und Nachname eingeben – user1851420
Ich implementiere den Highlight gefunden Textteil einer Funktion zum Suchen und Ersetzen. – alumb
[Dieser Link] (http://www.sitepoint.com/life-autocomplete-textboxes/) sieht so aus, als könnte es Ihnen den Anfang machen. –