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This is a performance test between two variations on make a string plain text.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script>
var testData = '<This> is a test & string ".';
var checkPlain1 = function(str) {
var character, regex, replace = {
'&': '&',
'"': '"',
'<': '<',
'>': '>'
};
str = String(str);
for (character in replace) {
if (replace.hasOwnProperty(character)) {
regex = new RegExp(character, 'g');
str = str.replace(regex, replace[character]);
}
}
return str;
};
var checkPlain2 = function(str) {
var length, r = new RegExp('(&)|(\")|(<)|(>)|([^&\"<>]*)', 'g'),
replacements = ["&", """, "<", ">"],
retval = '',
match = r.exec(str);
while (match[0] != "") {
length = match.length;
for (var i = 1; i < length; ++i) {
if (match[i] != undefined) {
retval += (i == 5 ? match[i] : replacements[i - 1]);
}
}
match = r.exec(str);
}
return retval;
};
var checkPlain3 = function(str) {
var r = new RegExp('(&)|(\")|(<)|(>)|([^&\"<>]*)', 'g'),
replacements = ["&", """, "<", ">"],
retval = '',
match = r.exec(str);
while (match[0] != "") {
for (var i = 1; i < match.length; ++i) {
if (match[i] != undefined) {
retval += (i == 5 ? match[i] : replacements[i - 1]);
}
}
match = r.exec(str);
}
return retval;
};
function checkPlain4(str) {
var replace = {
'&': '&',
'"': '"',
'<': '<',
'>': '>'
},
chars = str.split(''),
len = chars.length,
out = '';
for (var i = 0; i < len; ++i) {
if (replace[chars[i]] != undefined) {
out += replace[chars[i]];
}
else {
out += chars[i];
}
}
return out;
};
function checkPlain5(str) {
var replace = {
'&': '&',
'"': '"',
'<': '<',
'>': '>'
},
len = str.length,
out = '';
for (var i = 0; i < len; ++i) {
if (replace[str[i]] != undefined) {
out += replace[str[i]];
}
else {
out += str[i];
}
}
return out;
}
function checkPlain6(str) {
var replace = {
'&': '&',
'"': '"',
'<': '<',
'>': '>'
};
var r = new RegExp('(&)|(\")|(<)|(>)|([^&\"<>]*)', 'g');
var clean = str.replace(r, function(match, $1, $2, $3, $4, $5, offset, s) {
return replace[match] || match;
});
return clean;
}
</script>Ready to run.
| Test | Ops/sec | |
|---|---|---|
| Multi Pass | | ready |
| Single Pass | | ready |
| Single Pass Take 2 | | ready |
| No regexp | | ready |
| No reg or split | | ready |
| closure replace | | ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.