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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | 60x 21x 21x 21x 21x 21x 21x 21x 21x | const prefix = "dynamic-inserted-css-"; /** * insert css to the current page * */ export function insertCSS(id: string, cssText: string) { let style: HTMLStyleElement; style = document.getElementById(prefix + id) as HTMLStyleElement; Eif (!style) { style = document.createElement("style"); style.id = prefix + id; // IE8/9 can not use document.head document.getElementsByTagName("head")[0].appendChild(style); } Eif (style.textContent !== cssText) { style.textContent = cssText; } return style; } |