Javascript String Doesn't Have Trim Method ?

Jun 6, 2007

I was trying:

Code:

<script>
function testtrim(value) {
alert(value.trim());
}
testtrim("Alex ");
</script>

The javascript don't work, my firebugs says:[value.trim is not a function] how to simulate an trim function?

View 4 Replies


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Trim String In Javascript

Jul 23, 2005

for all your javascript trimming needs...

function trim(inputString) {
if (typeof inputString != "string") return inputString;
return inputString
//clear leading spaces and empty lines
.replace(/^(s|
|
)*((.|
|
)*?)(s|
|
)*$/g,"$2")

//take consecutive spaces down to one
.replace(/(s(?!(
|
))(?=s))+/g,"")

//take consecutive lines breaks down to one
.replace(/(
|
)+/g,"

")

//remove spacing at the beginning of a line
.replace(/(
|
)s/g,"$1")

//remove spacing at the end of a line
.replace(/s(
|
)/g,"$1");
}

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I need help with substring or trim function in javascript. Find below my code. Selection holds the value Select State, and length of the string is 14. I need to equate the Selection value to string "Select State" and execute alert message.

function selected_item() {
if (Selection=="Select State")
alert("Select the State");[code]....

I tried this:

var state=Selection.substring(0,11); and then string would be equated to state variable. But it is not working.

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$(document).ready(function(){

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Using Regular Expressions (JavaScript 1.2/JScript 4+) :

String.prototype.lTrim =
function()
{
return this.replace(/^s+/,'');
}
String.prototype.lTrim =
function()
{
return this.replace(/s+$/,'');
}
String.prototype.trim =
function()
{
return this.replace(/^s+|s+$/g,'');
}

or for all versions (trims characters ASCII<32 not true
"whitespace"):

function LTrim(str) {
for (var k=0; k<str.length && str.charAt(k)<=" " ; k++) ;
return str.substring(k,str.length);
}
function RTrim(str) {
for (var j=str.length-1; j>=0 && str.charAt(j)<=" " ; j--) ;
return str.substring(0,j+1);
}
function Trim(str) {
return LTrim(RTrim(str));
}

http://msdn.microsoft.com/library/d...363906a7353.asp

http://docs.sun.com/source/816-6408-10/regexp.htm

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Sep 29, 2005

Just wanted to share two handy RegEx expressions to strips leading and
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* JavaScript example:

String.prototype.trim = function() {
// Strip leading and trailing white-space
return this.replace(/^s*|s*$/g, "");
}

String.prototype.normalize_space = function() {
// Replace repeated spaces, newlines and tabs with a single space
return this.replace(/^s*|s(?=s)|s*$/g, "");
}

" one two three
".trim(); // --> "one two three"
" one two three
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MyObj.prototype.foo = function() {
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}
}

and here is some sample code to manipulate it.

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var s1 = o1.foo();

The assignment to s1 invokes the foo method and gets back the string "nn -
dd" as expected. now I try to find the foo method by it's name:

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var theFunc = o1[funcName];
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[URL]

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while (newLastRow.html().indexOf(settings.placeholder) > -1){
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As with the other post, I'm dynamically adding html to the page using a template, where the replace() method is updating the IDs of the fields when adding a new instance.

What's special about the value returned by the html() method? Is there a different preferred way to do this?

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[Code].....

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map = [];
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One problem with this approach is that dot properties like .name1 are
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