function selectText() {if (document.selection) {var range = document.body.createTextRange();range.moveToElementText(document.getElementById("copy"));range.select();} else if (window.getSelection) {var range = document.createRange();range.selectNode(document.getElementById("copy"));window.getSelection().addRange(range);}}希望本文所述对大家的javascript程序设计有所帮助。