Disclaimer : I'm a dick in JS, I really don't know it at all, sorry if this is really a noob question.
I found out a userscript that allows you to replace words/phrases on a webpage. Howevever, I have an error that states "expected a conditional expression and instead saw an assignment" on line 57
The line is :
for (i = 0; text = texts.snapshotItem(i); i += 1) {
The whole script :
(function () { 'use strict';
var words = {
'test 1':'test 2',
'bleh': 'blah'
};
var regexs = [],
replacements = [],
tagsWhitelist = ['PRE', 'BLOCKQUOTE', 'CODE', 'INPUT', 'BUTTON', 'TEXTAREA'],
rIsRegexp = /^\/(.+)\/([gim]+)?$/,
word, text, texts, i, userRegexp;
// prepareRegex by JoeSimmons
// used to take a string and ready it for use in new RegExp()
function prepareRegex (string) {
return string.replace (/([\[\]\^\&\$\.\(\)\?\/\\\+\{\}\|])/g, '\\$1');
}
// function to decide whether a parent tag will have its text replaced or not
function isTagOk (tag) {
return tagsWhitelist.indexOf (tag) === -1;
}
delete words['']; // so the user can add each entry ending with a comma,
// I put an extra empty key/value pair in the object.
// so we need to remove it before continuing
// convert the 'words' JSON object to an Array
for (word in words) {
if (typeof word === 'string' && words.hasOwnProperty (word) ) {
userRegexp = word.match (rIsRegexp);
// add the search/needle/query
if (userRegexp) {
regexs.push (
new RegExp (userRegexp[1], 'g')
);
}
else {
regexs.push (
new RegExp (prepareRegex (word)
.replace (/\\?\*/g, function (fullMatch) {
return fullMatch === '\\*' ? '*' : '[^ ]*';
} ),
'g'
)
);
}
// add the replacement
replacements.push(words[word]);
}
}
// do the replacement
texts = document.evaluate ('//body//text()[ normalize-space(.) != "" ]', document, null, 6, null);
for (i = 0; text = texts.snapshotItem (i); i += 1) {
if (isTagOk (text.parentNode.tagName) ) {
regexs.forEach (function (value, index) {
text.data = text.data.replace (value, replacements[index]);
} );
}
}
} () );
Can someone explain me what it means (I like to understand what I do), and how I can fix this ?
