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JavaScript - String Replace Function
Hi, I'm just wandering, how can you stop the replace() function from replacing characters inside a word, such as, if I try to replace 'x' with 'and', then my string would go from 'example, x' to 'eandample, and'.
Thanks in advanced Similar Tutorialsi am trying to make an online graphing calculator with javascript. dont ask how because i dont know. but there is an annoying error in a do...while loop. although it should break out of the loop when the |'s (absolute value signs) are replaced with Math.abs( and ). here is the code. Code: var initec = function(){
var rg = {
}
;
rg.matc = false;
rg.i = 0;
rg.change = function(equ){
if (typeof(equ) != "string"){
alert('Equation must be a string');
return;
}
alert("starting equation: "+ equ);
rg.i = 0;
do{
rg.matc = equ.match(/\|/);
if(rg.i === 0){
equ.replace(/\|/, " Math.abs(");
rg.i = 1;
alert("1 "+equ);
}
else {
equ.replace(/\|/, " ) ");
rg.i = 0;
alert("0 "+equ);
}
}while(rg.matc)
alert("finished equation: " + equ);
}
return rg;
}
rg=initec();
rg.change("|8/x+7|-2");
the last 2 lines and the alerts are for debugging. as you can see, it is not finished. but still, it should work. Hi, I am facing a problem in passing replace() function as an argument in user defined java function, can any one help me how to resolve it? intention is to pass a file path to my user defined function, but before passing the path i want to replace the character '\' to '\\' I am posting my javascript function he <a href="#" onclick="OpenDocPreview('<%# Eval("PATH")%>'.replace(/\\/g,"\\\\"), '<%# Eval("Filename")%>')"><%# Eval("DocTitle") %></a> function OpenDocPreview(url, docname) { alert('message from search base : ' + url + ' ' + docname); } thank you, Can some one help me, I want to replace the characters from a string and I have tried with this script: Code: var v5=form.description.value.replace(/#/, "%23"); But it only changes the first character from the string. Turning #### into %23### but I want them all transformed. hello, I'm trying to build a simple function to append and replace an argument in a query string, for example, if my url was like; www.domain.com/page.php?test=123&blah=abc and I want to add on qty=5 like; www.domain.com/page.php?test=123&blah=abc&qty=5 ok, no problem there, however if I now want to update that to qty=6, i get this: http://www.domain.com/page.php?test=...bc&qty=5&qty=6 my code thus far; Code: function AppendURL(){
var AURL = document.getElementById('AddToCartLink');
var numQty = document.getElementById('Qty').value;
var TempURL = AURL.href;
AURL.href = TempURL + '&Qty=' + numQty;
}
I would like to replace all the characters within a string with asterisk using javascript. Ex: If i have a string "test123". Replaced string should be "*******". Could you please let me know how i can implement this using Regex within javascript. Hi, I'm fairly new to javascript as well as brand new to these forums. I have a question that I'm sure has a simple answer but I either can't get my head around it or I'm just too unfamiliar with string methods. I'm trying to replace all instances of "&" with its alt code "&" in a string. Below is my code.. Code: Match = subText.indexOf("&");
while (Match != -1)
{
subText = subText.replace( "&", "&" )
Match = subText.indexOf("&");
}
The problem here is that an ampersand will always exist in the string if there was one originally and I get an infinite loop. Would anyone know of a way around this? Thank you. Hi, I am trying to write some code that will test if a user enters a non-numeric character in an input text field, and if so, replaces it with a '0' Code:
<script type="text/javascript">
function IsNumVal (){
for (J=1; J<=3; J++){
if (isNaN(Number(document.getElementById('Intext' + J).value))){
document.getElementById('Intext' + J).value = 0;
}
}
}
</script>
<Body>
<table border="1" cellspacing="1" id = "Numbers">
<tr id="RowNum1">
<td ><input type="text" size = "5" name="Intext1" id="Intext1" value = "3"
onkeyup="IsNumVal()" /></td>
</tr>
<tr id="RowNum2">
<td><input type="text" size = "5" name="Intext2" id="Intext2" value = "9"
onkeyup="IsNumVal()" /></td>
</tr>
<tr id="RowNum3">
<td><input type="text" size = "5" name="Intext3" id="Intext3" value = "18"
onkeyup="IsNumVal()" /></td>
</tr>
</table>
</Body>
document.getElementById('Intext' + J).value = 0; doesn't work document.Schedule.'Intext' + J.value = 0; doesn't work document.Schedule.Intext2.value = 0; works, but I need to test each text field while looping, so I can't "hard code" the ID. Suggestions? How do I replace the string "rpg" only present in between <et> tags ? Code: <et>ReplaceOnlyrpg</et> After replacement it should look like this Code: <et>ReplaceOnly</et> Any advice is appreciated. Thank you Hi, I need function for replacing one string with some html tag (for example <div>something</div>) in web page. Tricky is that in this replacing I must ignore all text between <a> and </a>. It's look easy but I am not good in javascript.
Code: s = s.replace(/\[code\](.*?)\[\/code\]/gi,'<span class="code">$1</span>'); This works as expected, but what I'm trying to do is replace the content within the tags with a santized version of what was in it before. Example Code: function clean(str){
//clean up string stuff here
return str;
}
s = s.replace(/\[code\](.*?)\[\/code\]/gi,'<span class="code">'+clean('$1')+'</span>');
But as with everything in life it's never that easy, it's simply passing "$1" to the clean function instead of what was actually within the code tags. Can anyone tell me how I'd go about doing this? I have a js replace function to replace text next to two radio buttons on a pre set form. Script is as follows. Code: document.body.innerHTML = document.body.innerHTML.replace(
"Payment by <b>Moneybookers</b> e-wallet<br>", ""
);
document.body.innerHTML = document.body.innerHTML.replace(
"Maestro, Visa and other credit/debit cards by <b>Moneybookers</b>",
"Pago con Diners Club, Mastercard o Visa"
);
The script works fine in Chrome and Firefox, however, the script is not actioned in Explorer. I believe it has something to do with there being , / - within the text I am replacing? When I use the function to replace text with no , / - in the text - it works fine in explorer, however, for example when I try to replace text.. - "Maestro, Visa and other credit/debit cards by Moneybookers" this does not work in explorer.. I'm assuming because of the coma and forward slash. Honestly I've tried everything but just can not get this to work. I have no access to the HTML table where the form is posted this is why I am attempting this funtion. Any help would be greatly appreciated!! I'll probably be laughed at for this attempt of coding, but all I am trying to do is read an input field, remove the "$" and write the new value in a different input field. Code: function convert_action (form){
var input1=form.input_field1.value;
var clean=input1.replace(/$/, '');
form.input_field2.value = clean;
}
Looks simple, and thought this would work, it kindof does, it just does not strip out the dollar sign... Help would be appreciated...greatly... is there a function in JS to remove a string from some text but without using the replace function? I am removing a specific string from my text using and using the replace function of the match text with a non breaking space but what i really do not want to add anything to my html. The replace is been place in a visual editor box after the user adds text and save the form, this is the code i am using to replace the code, i am using a regular expression to look for <META content="MSHTML 6.00.6000.16890" name="GENERATOR"><LINK title="/iw/ewebeditpro20/ektnormal.css" href="/iw/ewebeditpro20/ektnormal.css" rel="stylesheet"> : // Pass 1 - Removes extra code checks on Regular Expression inside replace function var newstrchanged = strEscaped.replace(/^%26%2365279%3B%20%3CMETA%20content%3D%22MSHTML%20.+.stylesheet%22%3E/g, ''); How can I call a function in javascript like: Code: var x = string.Length ??? and not like: Code: var x = Length(string); (just for arguments sake) (Also please don't suggest JQuery, I'm doing this to learn!) Thanks! Hi everyone, I have a hunch that my function is not returning the string value. Below runs some information about the code: getvalues_2() - A function that recognizes the value of the string selected by the user from the drop down list and sends it to a variable. Variable name is 'groom_profession' here. Based on the value (text) returned, it assigns a particular number to the variable 'profession' in this case. But, I have been noticing that irrespective of the value chosen from the drop down list, the variable 'profession' is assigned a default value from the switch case statement. I know the variable (textval_2) is able to store the correct value from the drop down list with the help of an alert command. But, it fails while returning the value. I even tried initializing the string in the function body but to no avail. What could be wrong here? Following is the code for one of the drop-down lists: Code: <b> Groom's current Profession </b> <FORM NAME="Profession"> <SELECT NAME="Groomprofession" onchange = "getvalues_2()"> <OPTION VALUE="c1">Select </OPTION> <OPTION VALUE="c2">Doctor </OPTION> <OPTION VALUE="c3">Engineer </OPTION> <OPTION VALUE="c4">Lawyer </OPTION> <OPTION VALUE="c5">CA </OPTION> <OPTION VALUE="c6">IAS </OPTION> <OPTION VALUE="c7">Engineer + MBA </OPTION> <OPTION VALUE="c8">Family Business </OPTION> <OPTION VALUE="c9">None of the above </OPTION> </SELECT> </FORM> Following is the code for function getvalues_2() declaration: Code: <script type = "text/javascript">
function getvalues_2() {
var val_2 = document.Profession.Groomprofession.value;
var si_2 = document.Profession.Groomprofession.selectedIndex;
if (si_2 != 0) {
var textval_2 = " ";
textval_2 = document.Profession.Groomprofession.options[si_2].text;
//alert (val_2); // for testing
//alert (textval_2); // for testing
return (textval_2);
}
}
</script>
Following is the code for the switch case statement: Code: <script type="text/javascript">
var profession;
groom_profession = getvalues_2();
switch(groom_profession)
{
case "Engineer" : profession = 1.8;
break;
case "Doctor" : profession = 1.9;
break;
case "Lawyer" : profession = 1.65;
break;
case "CA" : profession = 1.7;
break;
case "IAS" : profession = 2.0;
break;
case "Family Business" : profession = 1.5;
break;
case "Engineer + MBA" : profession = 1.95;
break;
case "None of the above" : profession = 1.95;
break;
default: profession = 0.6;
}
</script>
The website has a total of 11 drop-down lists (so 11 functions like getvalues, and 11 switch case statements. I thought if I could get one to work, the others might follow suit too). I would be really grateful if someone could look into my problem and suggest where I am going wrong. Thanks a lot! Hello, When I run the following code, the .Length function returns "undefined." Please help! This is driving me crazy. Code: var strTest = 'test'; alert(strTest.Length); Using the typeof function, I know that JS is treating the variable as a string. Any suggestions? Hey everyone, I wanted to write my own script for a fade-in animation, since the ones I have found have got too many options or need some framework, which makes them unnecessarily big. I wanted to learn too. Unfortunately, the code didn't work as I wanted, and I commented some things so as to find out what's happening. The only function called from outside is fadeIn with a string as argument (in the example, this string is: d1296668690535). This is the code: Code: var fadems = 500; // Anim. duration in milliseconds
var fps = 20; // Frames per second
function fadeIn(elemId){
var frames = fadems/1000 * fps;
var delay = 1000 / fps;
var incrOp = 1 / frames;
//document.getElementById(elemId).style.zoom = '1';
setOp(elemId, 0);
for(i=1; i<=frames; i++){
debugOutLn("(fadeIn for) elemId = " + elemId);
setTimeout("setOp(" + elemId + "," + incrOp*i + ")", delay*i);
}
}
function setOp(elemId, val){
debugOutLn("(setOp) elemId = " + elemId + "; val = " + val);
// document.getElementById(elemId).style.opacity = val;
// document.getElementById(elemId).style.filter = 'alpha(opacity = ' + val * 100 + ')';
}
Code: function debugOutLn(str){
document.getElementById("debug").innerHTML += str + "<br />";
}
And this is the text it outputs (on Opera 11.01): Code: (setOp) elemId = d1296668690535; val = 0 (fadeIn for) elemId = d1296668690535 (fadeIn for) elemId = d1296668690535 (fadeIn for) elemId = d1296668690535 (fadeIn for) elemId = d1296668690535 (fadeIn for) elemId = d1296668690535 (fadeIn for) elemId = d1296668690535 (fadeIn for) elemId = d1296668690535 (fadeIn for) elemId = d1296668690535 (fadeIn for) elemId = d1296668690535 (fadeIn for) elemId = d1296668690535 (setOp) elemId = [object HTMLDivElement] ; val = 0.1 (setOp) elemId = [object HTMLDivElement] ; val = 0.2 (setOp) elemId = [object HTMLDivElement] ; val = 0.30000000000000004 (setOp) elemId = [object HTMLDivElement] ; val = 0.4 (setOp) elemId = [object HTMLDivElement] ; val = 0.5 (setOp) elemId = [object HTMLDivElement] ; val = 0.6000000000000001 (setOp) elemId = [object HTMLDivElement] ; val = 0.7 (setOp) elemId = [object HTMLDivElement] ; val = 0.8 (setOp) elemId = [object HTMLDivElement] ; val = 0.9 (setOp) elemId = [object HTMLDivElement] ; val = 1 Why is an object reference assigned to what was previously a string? Thanks for the help! Hey all, I have a simple example below showing how when I pass in the value of the value attribute of option node, and then use if operator to check whether parameter is a string or not, even though it's a string, it converts it to false boolean and triggers the else statement rather than calling a function: Code: <body> <select> <option value="createMsg">Add Message</option> <option value="removeMsg">Remove Message</option> </select> </body> Code: var menu = {
handleMenu : function(callback){
if(callback === "string"){
menu[callback]();
}
else {
console.log("Issue occurred")
}
},
createMsg : function(){
var content = document.createTextNode("Please give additional information."),
heading = document.createElement("h1");
heading.appendChild(content);
document.body.appendChild(heading);
},
removeMsg : function(){
}
}
document.getElementsByTagName('select')[0].onchange = function(){ menu.handleMenu(this.value)};
callback should be a string so why is it saying otherwise? Thanks for response Hi I'm looking for a very simple script to replace one div with another. I've found a few but they seem overly complicated with features I don't need. I simply want to be able to click on a div and for it to be replaced with another div previously hidden. If someone could suggest a solution or point me in the right direction I'd really appreciate it. Thanks |
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