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Home/ Questions/Q 6573251
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Editorial Team
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Editorial Team
Asked: May 25, 20262026-05-25T15:06:32+00:00 2026-05-25T15:06:32+00:00

The following is a line from Backbone.js : return this._escapedAttributes[attr] = escapeHTML(val == null

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The following is a line from Backbone.js:

return this._escapedAttributes[attr] = escapeHTML(val == null ? '' : '' + val);

What is the point of '' in '' + val? Wouldn’t +val suffice?

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  1. Editorial Team
    Editorial Team
    2026-05-25T15:06:33+00:00Added an answer on May 25, 2026 at 3:06 pm

    '' + val concats val to an empty string, which results in val being converted to a string. +val converts val to a number instead.

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