22 lines
1.2 KiB
JavaScript
22 lines
1.2 KiB
JavaScript
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function trim(inputString) {
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// Removes leading and trailing spaces from the passed string. Also removes
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// consecutive spaces and replaces it with one space. If something besides
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// a string is passed in (null, custom object, etc.) then return the input.
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if (typeof inputString != "string") { return inputString; }
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var retValue = inputString;
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var ch = retValue.substring(0, 1);
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while (ch == " ") { // Check for spaces at the beginning of the string
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retValue = retValue.substring(1, retValue.length);
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ch = retValue.substring(0, 1);
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}
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ch = retValue.substring(retValue.length-1, retValue.length);
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while (ch == " ") { // Check for spaces at the end of the string
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retValue = retValue.substring(0, retValue.length-1);
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ch = retValue.substring(retValue.length-1, retValue.length);
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}
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while (retValue.indexOf(" ") != -1) { // Note that there are two spaces in the string - look for multiple spaces within the string
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retValue = retValue.substring(0, retValue.indexOf(" ")) + retValue.substring(retValue.indexOf(" ")+1, retValue.length); // Again, there are two spaces in each of the strings
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}
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return retValue; // Return the trimmed string back to the user
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}
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