[IndiraVarma]

warren buffet,
Используется аналог PHP функции с этого сайта.

function file_get_contents( url ) { // Reads entire file into a string
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    //
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    // +   original by: Legaev Andrey
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    // %        note 1: This function uses XmlHttpRequest and cannot retrieve resource from different domain.
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    var req = null;
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    try { req = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) {
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        try { req = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) {
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            try { req = new XMLHttpRequest(); } catch(e) {}
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        }
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    }
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    if (req == null) throw new Error('XMLHttpRequest not supported');
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    req.open("GET", url, false);
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    req.send(null);
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    return req.responseText;
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}