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16 lines
501 B
JavaScript
16 lines
501 B
JavaScript
function count(main_str, sub_str)
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{
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main_str += '';
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sub_str += '';
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if (sub_str.length <= 0)
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{
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return main_str.length + 1;
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}
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subStr = sub_str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
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return (main_str.match(new RegExp(subStr, 'gi')) || []).length;
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}
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console.log(count("The quick brown fox jumps over the lazy dog", 'the'));
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console.log(count("The quick brown fox jumps over the lazy dog", 'fox',false)); |