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aMarCruz/starts_ends_with.js

Last active December 26, 2018 02:01
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String startsWith & endsWith polyfills
Raw
starts_ends_with.js
;(function (sp) {
if (!sp.startsWith)
sp.startsWith = function (str) {
return !!(str && this) && !this.lastIndexOf(str, 0)
}
if (!sp.endsWith)
sp.endsWith = function (str) {
var offset = str && this ? this.length - str.length : -1
return offset >= 0 && this.lastIndexOf(str, offset) === offset
}
})(String.prototype);
@tipiirai
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Found this one by coincidence. Nice, minimalistic code from a Riot.js contributor. Thanks!

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