JavaScript escape quotes when selecting element by attribute value-CodePudding

I have a variable that can contain both single quotes and double.

Using this variable, I want to select an element whose attribute value is equal to that variable. I do this with a CSS attribute selector like so:

const cat = "Children's/Kids";
const div = document.querySelector(`[category='${cat}']`);

<div category="Children's/Kids"></div>

Currently, if the variable contains single quotes or double quotes, it doesn't work, as cat is wrapped in single quotes in the selector, and if cat contains a single quote, the final selector result will have an unclosed quote.

For example, the selector in the above example will be [category='Children's/Kids'], which will produce a DOMException since it is an invalid selector.

If it doesn't contain quotes, it works.

Solutions? Thanks

CodePudding user response：

You can let JSON.stringify handle the quote escaping for you:

const cat = "Children's/Kids";
const div = document.querySelector(`[category=${JSON.stringify(cat)}]`);

console.log('Selector:', `[category=${JSON.stringify(cat)}]`)
console.log('Element:', div)

<div category="Children's/Kids"></div>