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I have functions to save and load variables to LocalStorage. When I retrieve them, they behave like strings. How can I simply convert these strings to ints/floats, so that I can perform mathematical operations on them.
My save and load functions are below.
function saveVars() {
localStorage.setItem('moneyAdd', moneyAdd);
localStorage.setItem('money', money);
localStorage.setItem('crystals', crystals);
localStorage.setItem('wood', rsword);
localStorage.setItem('metal', metal);
localStorage.setItem('sword', sword);
localStorage.setItem('rsword', rsword);
localStorage.setItem('hasAnvil', hasAnvil);
}
function loadVars() {
moneyAdd = localStorage.getItem('moneyAdd');
money = localStorage.getItem('money');
crystals = localStorage.getItem('crystals');
wood = localStorage.getItem('wood');
metal = localStorage.getItem('metal');
sword = localStorage.getItem('sword');
rsword = localStorage.getItem('rsword');
hasAnvil = localStorage.getItem('hasAnvil');
}
Answer
You are dealing with strings, localStorage would always return a string, so ‘1’ + 1 would be 11. You would need to convert the string to number, boolean, etc.
Maybe have a change in loadVars() like:
function loadVars() {
moneyAdd = +localStorage.getItem('moneyAdd');
money = +localStorage.getItem('money');
crystals = +localStorage.getItem('crystals');
wood = +localStorage.getItem('wood');
metal = +localStorage.getItem('metal');
sword = +localStorage.getItem('sword');
rsword = +localStorage.getItem('rsword');
hasAnvil = localStorage.getItem('hasAnvil') === 'true'
}
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