Use PHP functions in JavaScript

JavaScript strcspn

Finds length of initial segment consisting entirely of characters not found in mask. If start or/and length is provide works like strcspn(substr($s,$start,$len),$bad_chars)

function strcspn (str, mask, start, length) {
    // Finds length of initial segment consisting entirely of characters not found in mask. If start or/and length is provide works like strcspn(substr($s,$start,$len),$bad_chars)  
    // 
    // version: 909.322
    // discuss at: http://phpjs.org/functions/strcspn    // +   original by: Brett Zamir (http://brett-zamir.me)
    // *     example 1: strcspn('abcdefg123', '1234567890');
    // *     returns 1: 7
    // *     example 2: strcspn('123abc', '1234567890');
    // *     returns 2: 3    start = start ? start : 0;
    var count = (length && ((start + length) < str.length)) ? start + length : str.length;
    strct:
    for (var i=start, lgth=0; i < count; i++) {
        for (var j=0; j < mask.length; j++) {            if (str.charAt(i).indexOf(mask[j]) !== -1) {
                continue strct;
            }
        }
        ++lgth;    }
    
    return lgth;
}

external links: original PHP docs | raw js source

Examples

» Example 1

Running

1	strcspn('abcdefg123', '1234567890');

Should return

» Example 2

Running

1	strcspn('123abc', '1234567890');

Should return

Dependencies

No dependencies, you can use this function standalone.

Open syntax issues

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