Ajax：后台jquery实现ajax无刷新删除数据及demo

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S/SO4cUe7Tn96lnJLj25b2vM5Z2bnnRHWANsnYgJqJJ+woS1bzpWZ2Z7NnaM5d0L5Zh3LzwD9TUbpQpCh717cR+R3Wlh/eZ0cnJTadM3p2ZK2CGdK41bHuxU4cP4liqss9XxwSqrPBxPTm78Q+jt3s4La/Mrp30fPcfcpcc4Fao9bK/ljFddNfrldjld3rpVuJFn9FN1keBnt3xSpZ5R3xIQ1mFxqH+ww0095+orNnFEqfPI0o2qFESLRHW66pE0+8xw2UO9XU7n8/CQlrdFklK3cV0FZmPBgpU6Xa11h7AG+PyElUSlQx+/eCEtY+2bjj++fqzOy8os7R6LcbwPX7MxqiB42P3o6l0W1tnFwfj4LMvOjiYnp2UG+uZkPBkdHR+MJ5VOtT9S1Wa0MrpUusP6liis64KWm8VorDmTrY5TFb/XvZ0X1gaOL2Tkd7Rvj67qAN9xpX6xBHZ2u2wTq81xymG6wNHEj7XLJ8k6/fSpMF+tgFWL4BHWpoI2N98ujU48Gevsct7cCPgcrUTzPPbI5XK5vC0MWX27nC5vs8vlfK4J6nb8+mZTB98u55eZsdF/XqrTErxZCpw2q36nbqi+hGwnHTcG2t0EwhrgM9MlrF83aWBZwtqgmXsNZas47h6LRwmb+Jt1uxHpbfHx9ePHj5takIHqQIpdFtZ1irqupii5WWglHwbZxcHRxZmW26707rC+pQnr1cXBePHmZjEqK0D0VPrJqrx/uLN7+yWsXc980tPVKT0G6hA0iWMoIHdNbi3rLKUaeIGwSwh3+5k0MsVLz6uL6mecfeqpZEftdfTLi4NQ33C0CepSk15e3l4u2+3asYX3FUHlVqjPSWo+a+53Ce+qPMUqjG+vsM6MtbX9EmEN8NnZ5RrrhnY6NpWtJ//VjKXc/66tc3aPMqLZIlQJ4j1ML1b5+PrxF15jnV0cHC1OjlRhnZ0d1S8Lnt7UCnvxxi78OLp4o5VeDJQSblxbmeJYseODI3cpiF71cQ/vVu6RsHZ+f/qkq6N7LIpSziyXPv2hpp+7JVaXGuuopi3cmizGT9fhjv7arY3cdN0HNIe2byN2FSGbrjrdjHt1s35PMerI8sCytt2K8e1yfnm5VEahHODPWBeOjR1PEuza546aIceh6qcUYR2VsaYUBEASuy+stem4j7CedtdYRzabqKpteiXnXOyqsL5ZnNyUOeC6FGR8fJbVtRNZpq5v0BZ71DXWxc2iTGlbinYI3/q+vHjiqPyejMZ9Kq33V1h/fP3Y+cSmp66O/gLU+Vbvch+eBdv8GWslS22V+8ZKS3eW2Odn/Eojt8tGm6seuQtW/O06VWhH187Q3/WtzXLFjDYJbyZ81WrsZrmQeGEdN6a6e98ngoU+xqMMh7DuatN4goCwBvj87Lawtqfj7poNR8b6o7VXW6vjxbuOZi03zI/7vHWN54sW1kVRV3HU2vRmMapLq+0XGa0q6qa4uU+Bdadvd1oVpCjIWHsILPkRWaqV2mOFWsbgVm+V2glqVz3zq4intslwwrMzY93tp/0Bfwpec1M90ivDVPcj1seIcdF529HvyNulmrHWzosVzmhhrRHSp81gffdgdni168L5umhCxrrcoT5ZQVgDfGZ2WFg7p2PDU8e8HK6x9ow00GzkQmDOwyLffUxnX4R1dra6Keqqj6YypFleo1bP2dlpXXtd1ooMuOyG6lmKsFbT0vX2UlhnZ0d9ylTc7u28sA7mpHs/wun+AjSv0jW41niIzlh35S2bPGNqjXWcnx5vnMNWhLU+PI8M06uo9RsHpyDtFtbK0sx1z94KmM4j21ua8haorZixFxaJEtbxFSse6esMRfuGZX2WrcBaVSFG601RvPapVtfPWW4PQAK7Kqy903F4ub3CmW3WdHbScnv9FhXxOTOYrt4DYV3/sjpultQofz5YVfUglbDW/upKo2iHU64KVY/ZxcHRxZuq2kTz1sxYN0OohH6dsVZW37ure7surI113Euar0Tvb0T4RHrfA8y0ZZNvl9PpfLl0KTnHu2kBBRPKiYYy1pF+2gSFdSPgl4ZCt2WYo58OJRnu3XRBFamOT8UdebsslxFRpWh2OZ/P5/bRiRnrSplfXs7nl7eumEe8ldrqXvtX11oqzVXXvWSffouV1euoO7oHgC2yo8I6OB2n/oEYtbHAKB3NhlVBnLdxf50mkb0R1vWWychaa696ebFOTjeyuyi0ApLhfFNk8dHipH23Miism/pvtYXq52T1v4fC+p7w96i+lBc4Ylr/Kb92iw8r91ihKi1b3qgK16NOI/20NoX0lCKerfsDZV/lnS+BbQw9BiNx6xmQtexdxJFa0raJSNYu162Pax5eG0/TpnbxhfLRub4oX2cpiGdHeyHYleIB2tryQIdkrAE+B7uswMCL5NAlCOtqDRBnXbIiUsu/Lm6Vf7w5HfQPxNwsDlZZtTbI0fHB0UXmWqLEqFdRvPUvF3gX9xDWQnoEAAAoZE9Akn0TjuTQ4VtvENaxCD+RAACwr0iegCT7JhzJocO33iCsYxF+IgEAYF+RPAFJ9k04kkOHb71BWMci/EQCAMC+InkCkuybcCSHDt96g7CORfiJBACAfUXyBCTZN+FIDh2+9QZhHYvwEwkAAPuK5AlIsm/CkRw6fOsNwjoW4ScSAAD2FckTkGTfhCM5dPjWG4R1LMJPJAAA7CuSJyDJvglHcujwrTcI61iEn0gAANhXJE9Akn0TjuTQ4VtvENaxCD+RAACwr0iegCT7JhzJocO33iCsYxF+IgEAYF+RPAFJ9k04kkOHb71BWMci/EQCAMC+InkCkuybcCSHDt96I09YYxiGYRiGYdieGcIawzAMwzAMwwYwhDWGYRiGYRiGDWDbFNaj8ST++KIofve73+XbZfs9AgAA5LInIMm+CUdy6PCtN6kl4AhrAACArSJ5ApLsm3Akhw7feoOwTojUlnsEAADIZU9Akn0TjuTQ4VtvENYJkdpyjwAAALnsCUiyb8KRHDp86w3COiFSW+4RAAAglz0BSfZNOJJDh2+9QVgnRGrLPQIAAOSyJyDJvglHcujwrTcI64RIbblHAACAXPYEJNk34UgOHb71BmGdEKkt9wgAAJDLnoAk+yYcyaHDt94grBMiteUeAQAActkTkGTfhCM5dPjWG4R1QqS23CMAAEAuewKS7JtwJIcO33qDsE6IVGj35nw2nZ1v1E3rhbkljfViGqaz9c35bLpYt66tF9PFWm2+/a3bF2dvm/OZ5tLi3NhQbbb7KX27Y/fVGBIjvTmfDXp42b3vdLk+u15EnD218Tg3vSfU9G22WJinqflkjyu541JST3UdTOPC6RoiV7KTz3Ylb85n6u/Oa6/tzYyt3WJSDL9MJCsJyb4JR3LoIny7fjJ+dt38tlk9UH/t+ODDl3dQR2Hf3r96OBpPRuPJ6HD1frN6UP6s9Hj9dPLg1SbPNy8PJyNrb379bHRn95IE7a4I67fP23+9n791blc3x0XKv9OeORZra3pKnTjCk2zEFFyqj/bAzWbdTIDeuc4774d603SOMn0HZ/IuPaTs93df9dAdDf+Au2RdWI44dGiUTIhVg96RhQZkXnRaI416Ki8O3YleV3JoLE43Z+drJUTdJ48rWT/Qe7rv/Uqur4Vw6Ktm9LisF83P64Xuqx1A65q7U45iH4hTYB+uHqXObAPQdzr+cPWo2vro6oP1KcdYlIZcn+ho1udGnLdtq139p7Dbwvr62ehpI6RVkVpaKbKvn6gbD1fvzQ8O79v7Vw9HT6/zzepBKawPV+/zzcvDhy83+fXTyZNrTVg/udZvCTarB+OHT54+rFzt616SoN0JYf32uXLZf7h6VH89lB/zD1eP0r4agR6rGUmbEjfnMzXD1oc7CutyFrXm0s35bHZ+npLj6+5tcz5TWvPIkSghqCfBmt9C3Zf7ElJexqFG23F6tQqfJ/Ns9BDbpC+57RXWanyUlHD9c/ujlbE+Py8/YQjrnldyz4x1rLDmSvZ7u90r2d5o3pkZZ0mN4OZ8oXXpd9S8BFMz83tJhAKrpJ8wYR0zHWvHtAdaWbH2mLfPPQP1NetzI9LbPH/7/D4iu9PC+vrp5Ml1pU2vn5opYYd0rjRuebBThQ/jW6qwfv/q4YNXm8rD8eTJtX8I0e4lCdpdENbmV675Pmo7Um/t/T22c0v77/96UU8EVk4wmjuVglSTn9p749164UpDKk1GTsmK6DDUmU+OhCOhf7Cjc11QLNaxk68lEZU8qLsFb8PNDvMIz1Ddm7UPJ0Y+fIloxRJ6xtouBdGvlrQrOUJYm87Hl4JwJQcC81muZENY+4KpECwuqa8erS+EtUlYSVQ69NHz59Iy1r7p2EhtKarZPZbIVJivWa8qiPP2vnT1LgvrzerB+OHLzebl4eTJ0zIDff1kPBkdPnwwnlQ61f5IVZvRyuhS6Q7rW6Kwrgtarp+Nxpoz7189TFX8jXtJgnYXhLVB+027r4x13i2C+2jru2SszWfneZ7nm/Vi1rjSzGJ6stP/mDqYaNNG2S1HTN1hbl4vjJB15DQd2st7nNVQ07ZPL3XN6oowUGpKPS0FKlG9LndrCnfGWnfRoX0q0ed81p9yJfs/01QM9M5YcyX7jvscV7J+m9BV/tIco0l+R+zs3xHWJl3C+qpJA8sS1gbNxGsoW8Vx91g8StjE36zbjUhv8w9Xjx49ampBBqoDyXdZWNcp6rqaotr6TCv5MNisHhyuXmq57UrvDutbmrB+tXowfnZ9/WxUVoDoqfQnr8r7h2T3kgTtzglr85lPUz+V+q9PyhdAnweauSSxJMCeg2Oz355n57nSqNK4qgI805dZE+lp0fPCl/pZZ0vlJKwmwYxhxte9+AJUxt6oz7DqJFqpFnF+mmasNKHWgClbrVrS4Cn1R77zgYbrUtKrfadljUeZJI2QYu1Rdoh6ZKwjhDVXsuuA6We9kuttvmcFegCaQhNv986k9znC2mCXa6wb2unYVLYOpauNpdz/tq1zdo8yotk8VAniPUwvVvlw9egLr7HerB4cPntyqArrzcvD+mXBp9e1wn52bRd+HK6utdKLnilh3672zUWHPXxw6C4F0as+Bni3MknQ7pawNr4/2nfDW6Plj1Rg7z1lrMvkVWKjXVmvrtnWrWEWC+fc1sqLpj+X0mkObVWdI3UbWtWia2JtClQjZ+Du5/nNcV0ZTqccCZ8czelA74HIe5p09a6e8UYONaUe+tXUN2N9HzXWXMnBA5Xutnglb84Xs1l1S+ar+3AI66iMNaUgfnZfWGvTcR9hPe2usY5sNlFV26TKBy+7Kqyvnz25LnPAdSnI+OHLTV07sdm832yajHVb7FHXWOfXz8qUtqVoh/Ct78uLTxyV35PRuE+l9f4K6w9Xj4wnNo6HRAl3ncEe7deGBpgHGmGtzjbBJ/56/76igNn5Rs3taXohJJtcmmC9aHSKKkc8j+Q7M1zqCJL0XWeeLy6/q1UA1OPQqwfaKJgFsVHCWmmuQ47m4chHjMr/DN9AabzXldxTWLs9MD/KlWwPopt7u5LXi8V5vbG5BdDOo1tYO9HOgpbtR1ib7LawjpqODccdGesP1l5trY7nbzuatdwwP+7z1jWeL1pY53ldxVFr0+tno7q02n6R0aqiboqb+xRYd/p2p1VB8pyMtQf7JeP8PoV1TI1Hcs66nRR7NGlOlcp2XTvY86vdUji1WHdiZ6cCE6LndiEwnODEat+DdOKXLvUeh0BwfDJZWOfN9dLhbDjyddbUJzrrhx3K83t3f1rT/a5kt7Be+xdF1h/1B88uV3IX27ySN+ezpnxIEdaNGvYL666MdbnDaNp27ctlh4W1czo2PHWUUIdrrD0jDTTrdCPS28h3H9PZF2G9efnqOq+rPprKkGZ5jVo9b14+rWuvy1qROyy7EdibJKzVtHS9vRTWm5eHfcpU8v0U1l7FbJWCpHw1Ir8Am/OZ/bC5z7zgmBSjM9btfmMer38N6SdjsrOzSsZQdDnimxXL8FYAACAASURBVKs1dCHmm/b1DwQCmPLsvOlBncLdlRS2M2r47FRmrLAuaw5mMyPYGlGR191Ve7Vdj81Y65+IvJKdwtp8sq9dHNoJDZ9drmTvsdu/ktfn5UOCuIy1QyZvzmdKAbsWuvKIKquOsDbZVWHtnY7Dy+3lzmyzXteZstxev0VFfM4Mpqv3QFhXv5SVzaWALn9+8GrzflMlsOuUtvrOYp9V9iJ9q3rcrB4crq6rahPNWzNj3QyhEvp1xlpZfS/VvSRBuwPC2ljHvURZi7Im8YvR+QVQag6VGbomNWHdTJL9Mta59Ri4arRbwSgOeJXcVJccjUMLQ63YE6L56dyadVPlSOezc61rNQU5XazzfLPZqKdOF396i84+4oV1HShlT73JfiQeE3nNKfU6mc0clbFRGWuln4QrWS8xMLdpexthpTTTlcXlSnY5/vmuZE9aWRlifUGWyzp2/tun3+Rszmfl+uQaCOvdFNbB6Tj1D8SojQVG6Wg26Eakt/3FQ4C9Edb1lsnIWmuvenmxTk43sjvPtQKS4XxTZPHhsyftu5VBYd3Uf6stVD8nq/89FNb3RHAda+Nf/rsnWNqp0JP6iph+XWlC9yxpTl5qDYG36foQZbCuCbzeV/XjS/vVLIKva2rMqtJaRz7TGS4lwacPt/VC9952xNFHOcSQz/Wi0R1KcFpVSMRHXuvUTFW2/sbH87z3lezqozk/ZgtartUXV8cnuJLzz3wlG2pb97X9ZKmrtXPgZbF2jpiMtckuKzDwIjl0CcK6WgPEWZesiNTyr4tb5R/XTwf9AzHXzx682lRrgxw+fHC4eu9aosSoV1G89S8XmOJekqBFWO8S1QwYI8J3lKaO94ufd/cbrmT4wpE8AUn2TTiSQ4dvvUFYJ0Rqyz0CAADksicgyb4JR3Lo8K03COuESG25RwAAgFz2BCTZN+FIDh2+9QZhnRCpLfcIAACQy56AJPsmHMmhw7feIKwTIrXlHgEAAHLZE5Bk34QjOXT41huEdUKkttwjAABALnsCkuybcCSHDt96g7BOiNSWewQAAMhlT0CSfROO5NDhW28Q1gmR2nKPAAAAuewJSLJvwpEcOnzrDcI6IVJb7hEAACCXPQFJ9k04kkOHb71BWCdEass9AgAA5LInIMm+CUdy6PCtNwjrhEhtuUcAAIBc9gQk2TfhSA4dvvUGYZ0QqS33CAAAkMuegCT7JhzJocO33uywsAYAAAAAEEWSoBUkrJOOvzvb7xEAAKCQPQFJ9k04kkOHb71BWMvtEQAAoJA9AUn2TTiSQ4dvvUFYy+0RAACgkD0BSfZNOJJDh2+9QVjL7REAAKCQPQFJ9k04kkOHb71BWMvtEQAAoJA9AUn2TTiSQ4dvvUFYy+0RAACgkD0BSfZNOJJDh2+9QVjL7REAAKCQPQFJ9k04kkOHb71BWMvtEQAAoJA9AUn2TTiSQ4dvvUFYy+0RAACgkD0BSfZNOJJDh2+9QVjL7REAAKCQPQFJ9k04kkOHb71BWMvtEQAAoJA9AUn2TTiSQ4dvvUFYy+0RAACgkD0BSfZNOJJDh2+9QVgP1GN2OZ/OLzN10+3S3OLZm13OXQfeLqdhtA/pvTncCfvgHlKz1/Bleet1c3kbPFpv37era/Dlx7LLuaebcmDB4YXHbrjp99PVbvfBgTY7z3oz0tulNgDjdHUNrjo8YnRRIwKA+0SykpDsm3Akhy7Ct5uT8eJN81t2caD+2vHB47OY+beXb9nqeDSejMaT0dFFll0clD8rPb45nRyssqLIzo4mI2tvcbMY3ad7NrsirN+9aGXIi3fO7ermu/ZoSLzpdLq8tRSSpk5U5etRmNHC3H2wJZlsJ500zRhKrWnKEFr6HUItrDvG1jm+gJozdrluS+qm+/QeF6ZqmHbjzo3xbTafN11vfm8OuF3Op9P55W24bV+IlfabCJqXbLMVYQ3weYmbqj++fpw6sw1A3+n44+vH1dbHrz9an3KMRWnI9YmOZn1uxHnbttrVfwq7LaxvFqPTm/oXVaSWVorsmxN149FFZn5weN+y1fHo9KbILg5KYX10kRXZ2dHxWVa8OZ2c3GjC+uRGvyXILg7Gxyenx5Wr9+CezU4I63cvlMv+4+vH9ddD+VH7+a49ViJZk2rZ5Xx5G8gba7rJLV0ShHXZUVBieXLizh7sjHNYWBsHx2Wsw0n1HsLar15dLYWEtet+QheiTdK4lcOhoCe0qQpr5ziMU+G7D9IHF58Ht+9UENYAn52IqbqSfsKEdcx0rB3THmhlxdpj3r3wDNTXrM+NSG+L4t2L+4jsTgvrN6eTk5tKm745NVPCDulcadzyYKcKH8a3VGGdrY4PVlnl4XhycuMfwhDu2eyCsDa/cvX30dj+8fXjlLtOf4+t8GglSfuY3iNLTF3sEHnxpSC6Rg2WWARbNUsLpi41GJuxvlzWpQaBmodQKcgAGWttMBEoJy1CgapDdvxuOBbZZqeMrQ5Ik7uOo70NdN2pxFXQAMCAhKfqSoc+fvFCWsbaNx0b86+imt1jiZyvfc363Ij09r509S4L6+ziYHx8lmVnR5OT0zIDfXMynoyOjg/Gk0qn2h+pajNaGV0q3WF9SxTWdUHLzWI01pzJVsepij/GPZtdENYG9TfN+mJ673l79Nglgk0JY+gxX1FBVMa61D9dMj3YlaO77HI+jRLWBm3v4ZR0pdoC6rk7nJrymy+XTUy14Dh9iC5Cd2SXQ/iFdWSb1W63qFUVdX2COu4ZvOUcyiarPt+8EJrPRkYBAIalS1i/btLAsoS1QTMNG8pWcdw9Fo8SNvE363Yj0tvi4+vHjx83tSAD1YEUuyys6xR1XU1RcrPQSj4MsouDo4szLbdd6d1hfUsT1quLg/Hizc1iVFaA6Kn0k1V5/zCkezY7J6yVhzmOjPVgwlpHlyYOMWLKOqdesYW1S9Jml/PpfLmc6xlrv7CPzFi3jbjqD+Kac/avfG5569fo+h4tFIGMdf3z7bLVnIF8eUwdTEeossulmRp31H8ktNkK6yZt3OaPjVS1dZ01z0scV47ZU3OQ42L0/oqwBvgs7HKNdUM76ZrK1qF0tbGU+9+1dc7uUUY0W0TP/f5ilY+vH3/hNdbZxcHR4uRIFdbZ2VH9suDpTa2wF2/swo+jizda6cXAKeH2zUWHHR8cuUtB9KqP+3230ma3hLXx/Xn3YqpVTHm/nek9pmWs7XSpP3cZaLmSvKWC1ISnd7mI2Iz17XK6vLycN01HZaxrsRou8tA6C2fX3b4ZuNRlE7RAQly/G3E3HKz6qLaVpfRdejm6TVNYa/rXWQMS7L5N4atpcrVIx1U2430tFmEN8FnYfWGtTcd9hPW0u8Y6stlEVW2T9rg7wK4K65vFyU2ZA65LQcbHZ1ldO5FlWZY1c0hb7FHXWBc3izKlbSnaIXzr+/LiiaPyezIa96m03l9h/fH1Y8cTm/aF3xfv0v4NCvZol1GEJJurDMGhWBph7ZK0+vFG1tZagEQX1p0SsGzCnXy1steeuwe9H0s8esoQ9IN8q/1pLVrBLg8O6ea6/1DfAbS42yML3XZ0t2kI67ZixiGsS/8thdxcAc2h5vVR58bnl5dLy1/regk/fQGA+2e3hbU9HXfXbDgy1h+tvdpaHS/edTRruWF+3OetazxftLAuirqKo9amN4tRXVptv8hoVVE3xc19Cqw7fbvTqiBFQcbag/2SsU3iVyP4WCTi1Ti9eiJiEZBK33RlrNVja18ssZeYsb5daklTo02lCtizBEh4VRBz/G55aybQozLWde2HrjjtlgOyvpbGvuqc+iGCK3nc3JA4RtyrTVUi28nnrF2KumpcCX917ZSHqsNsnVDLYfTa8OrEza21wCOfMADAsOywsHZOx4anjhLqcI21Z6SBZmNUge+wyHcf09kXYZ2drW6KuuqjqQxplteo1XN2dlrXXpe1Ivez7EaSsFbT0vX2UlhnZ0d9ylQ63bPZBWHtey9B2564Jkh0pOyS50KXI1X5r++j1kP3xIy1Q7XXn4osh7bXiDP0oJFTVaSXo7rA1JLOlK4dk1Yl1geEhLWl4ZVKE8da3lpTvvPROq4Mwar8Vn5T+vLldSPa1F9etN4mVR9h1G1kl/Pp8rK8eKpgtNUw9ZnXblLU60GN2OXSugLsZfsQ1gDbZ1eFtXemDS+3VzizzXpdZ8pye/0WFfE5M5iu3gNhXf+yOm6W1Ch/PlhV9SCVsNb+6kqjaO9FuVY9ZhcHRxdvqmoTzVszY90MoRL6dcZaWX1vQPdsdkBYG+u4lyhftIrU70VnpBQppGhOXfFZQs/RRFNa2ymHLWHtbN5VQ6uqp1aZuksCLHV1u9TUc3zG2la1WqPGanfLyzagHj3nfQPRUPZtSL0a2jV6ayzzuZ6510No3kvZnXW3WUXX+KOKzeez26wpd2+0eVst0nxebauJQNNrLcAr+a0/ndCD6wgKwhpg++yosA5Nx8l/IEZtLDBKR7NBNyK9vYN68LM3wrreMhlZa+1VLy/WyelGdheFVkAynG+KLD5anLTvVgaFdVP/rbZQ/Zys/vdQWN8TwXWsp7pk8z0wj8j3Vdq4lUee0g1Xxtp84O8Uts2G5uWC6od6r1G8bPvcNGO8XRfOWPsz9Wp4pk3uVd3mxnmDUh/vKfDo6NxxL2Plu83Wu8qqFVUf02bMc4U6T+18oGA2al+M+v2XffkWxtlyPRMAgG2yywoMvEgOXYKwrtYAcdYlKyK1/OviVvnHm9NB/0DMzeJglVVrgxwdHxxdZK4lSox6FcVb/3KBg7jnAmENcJ94a+CjDwCAvUPyBCTZN+FIDh2+9QZhLbdHAACAQvYEJNk34UgOHb71BmEtt0cAAIBC9gQk2TfhSA4dvvUGYS23RwAAgEL2BCTZN+FIDh2+9QZhLbdHAACAQvYEJNk34UgOHb71BmEtt0cAAIBC9gQk2TfhSA4dvvUGYS23RwAAgEL2BCTZN+FIDh2+9QZhLbdHAACAQvYEJNk34UgOHb71BmEtt0cAAIBC9gQk2TfhSA4dvvUGYS23RwAAgEL2BCTZN+FIDh2+9QZhLbdHAACAQvYEJNk34UgOHb71BmEtt0cAAIBC9gQk2TfhSA4dvvVmh4U1AAAAAIAokgStIGGdb5ft9wgAAJDLnoAk+yYcyaHDt94grBMiteUeAQAActkTkGTfhCM5dPjWG4R1QqS23CMAAEAuewKS7JtwJIcO33qDsE6I1JZ7BAAAyGVPQJJ9E47k0OFbbxDWCZHaco8AAAC57AlIsm/CkRw6fOsNwjohUlvuEQAAIJc9AUn2TTiSQ4dvvUFYJ0Rqyz0CAADksicgyb4JR3Lo8K03COuESG25RwAAgFz2BCTZN+FIDh2+9QZhnRCpLfcIAACQy56AJPsmHMmhw7feIKwTIrXlHgEAAHLZE5Bk34QjOXT41huEdUKkttwjAABALnsCkuybcCSHDt96g7BOiNSWewQAAMhlT0CSfROO5NDhW28Q1gmRCu3enM+ms/ONumm9MLeksV5Mw7hbXy+mi7XaRvtbB5vz2Z0cNt0IN2YOT3dTG4XLU3O34wRszmdtqNbtL1a3G2Pf4tx5sMMhhyPBEftDYg14cz4zujTcVPaVLfva7zivm/OZNYSoa9f2MMx64Q5iZJdJF0xzYsxz6//qhL8rnd/GxqP1Qmtdjb5jjI5eI4KfdN3BPiBZSUj2TTiSQxfh2/WT8bPr5rfN6oH6a8cHH768g9gI+/b+1cPReDIaT0aHq/eb1YPyZ6XH66eTB682eb55eTgZWXvz62ejO7uXJGh3RVh/uHpUz3bP3zq3P7r6kBop/0579l6srZk4dSIMz6/K3rfPH119yPO3z5+/zfPNZt3oHbeoqIRFjFLo43aM89URTdO2TlD3vn0+nT5/m7993pw0p66wpHUtacIi3d2nqoeCwrTr1kXZH4iJcTJm5+f22alacXlTt+zWW53jd4zB1ZL/coq4Xrqk4JAXjL+7Ms4+P0I+1u2bxzS/NwesF7PQnVxzijeq14HYOv4pSQs97ANxCuzD1SN9xtsKXb69fd5epKp34enYMRalocAE7mvW50act4qm6Og/hd0W1tfPRk8bIa2K1NJKkX39RN14uHpvfnB4396/ejh6ep1vVg9KYX24ep9vXh4+fLnJr59OnlxrwvrJtX5LsFk9GD988vRh5Wpf95IE7W4I60qJ5Xn5bai/Ah+uHjXb3z5P/GoEeqwUnSYNNuezxdqRRU0gVlhrurrpvdRmSVPt3TPWcdJLFSLlMEp14tIPs/NNnn+4evT8bZ5/uHpuCWuf5pidb+rxxOpqPXPrEdZRI9Qug2koX9nsKEdf998c6TglzSa/K2VcY6g73JzPwlJQiWfrcjvGVvR7Yu0Z+z1dMA5Pyp66rm//d04V1gH37Gb8Getmj9ErGWuwiVBglfQTJqy1qVaZg8PTsWMsSmZFm+N1fM363Ij0Ns/fPr+PyO60sL5+OnlyXWnT66dmStghnSuNWx7sVOHD+JYqrN+/evjg1abycDx5cu0fQrR7SYJ2F4S1qqXV3/Tt+tc0KlKePe2M2s6h7ePgWFnnbDdMI6yVhK46WftSXcqsHe6j79QdNe3bOklvQM1YP7r6kH+4evTo6oPhcbCXMhb9dHVIWIeb0z/YcQoXa+0KcclVs1IjlLF2En0Fem+slB39LpiuqA16wWguVjcE0RezNwYxaX/jbHYOx/WNzD1ns+tfA2T2nhNWEpUOffT8ubSMtamA63nXPx27x2Ic78PXrM+NSG/vS1fvsrDerB6MH77cbF4eTp48LTPQ10/Gk9HhwwfjSaVT7Y9UtRmtjC6V7rC+JQrruqDl+tlorDnz/tXDVMXfuJckaHdBWGso3zPjq5T40Czc431Me9GlICrlg2jl+bKZTdOVg5ll13f1vyOIaMevkzbns9ksqLTKcGv6tUlgG9Uc54vpYh2UuGbqu4ldh7A2FbS52SopDpeCaLUcDn/NUcwWi5miJdtMbVKpf9Okkuk18RQkOzLWgU7iy0AGuWC6n2l4HPKFq/LKfSGpinpzPpvWLgawMusdflrJbnUA/b+rsCt0CeurJg0sS1gbNBOyfzp2jyUyERY5yyfL9A9Xjx49ampBBqoDyXdZWNcp6rqaotr6TCv5MNisHhyuXmq57UrvDutbmrB+tXowfnZ9/WxUVoDoqfQnr8r7h2T3kgTtDgnruiRKvQ82v3IJ34+UL4Cubjreo/JOuvYUn1AsXBcXW+JQ39bhSJ/Z2lRRyTqpzrV3vEi2OC9TuWaBcPu7rxTE1bYSMs+ri1NFYa4XU1tv6vW7aS+l6cK6Cof7eEPm1143Ws7utGMwmmeWMI/OVrva7R54fk8XjK081RuXQNGT7yagFdZGkU79Ae/Nq/oca2oFN/Y7hrD+wtnlGuuGtrYiYjrWxlLuf+t5d8rbjHuW91eCeA/Ti1Wqx6cDsKvCerN6cPjsyaEqrDcvD+uXBZ9e1wr72bVd+HG4utZKL3qmhH272jcXHfbwwaG7FESv+hjg3cokQbtDwrqmfrhzr8L6njLW4WLZrofrifLHdz+QRrRad+skh0xxuTmbNbGpk9JN0Gbn63Ig9XjMm4o2sKoKboX1Os81IaPFRc1DO5x0aduaSGGtnlkr6+1Wbc1F4rxhWCy6stiasO6+Vrwv8HkICuv7uWCaO5T6iY12BQwgrJsmvVdscGDVJ5rC9pnvbWLtEu0OEuwruy+sNTnbR1ir0tZTYx3ZbKKqtvGWeKeyq8L6+tmT6zIHXJeCjB++3NS1E5vN+82myVi3xR51jXV+/axMaVuKdgjf+r68+MRR+T0ZjftUWn8Bwrr5ft5jKYihHALzdgKNkNBTc00X/rnUlA/qAmCqcoxidn71vPuoElc8OxOQVY1D/aDdUdOh0rxm58hHGlHR6831rPRafbFwvWjEpxoedwLSHzjL4U7N6PyES6sr26yLq6qLseVzO0SryMfO4UdkrIODd4/HbD6GQS6YMvTmVaHcv9xRWLd3QA5hrYt/++pUb5kd38wuX9rLCjX95bDbwvrD1SOjgKJ7OnZkrD9Ye7W1OvS1oxzNWm6YH/d56xrPFy2s87yu4qi16fWzUV1abb/IaFVRN8XNfQqsO32706ogeU7G2oXj/YMmZa1sH+zlxbgaj+Q5sC1kSG3SEJDqps5U8J0z1nV35t2AW8usF9PZbNbmHlWH3Z2vF4qYUduZLhaGYNSFtUODObLS9T5VC0a90BbxND6gL7uuII+wrkPmqI9oorJujlSrRnyeBTLWdfbceWEoWtEOQ/elNOwFo7mh3j9N7RPv6iBQY20MSIlwe8CmeWBSh6vJUE+VRybBHvRutIOUU23fIsG+ssPC2rkEV/d0HK6x9ow00GzkSmDOwyLffUxnX4T15uWr67yu+mgqQ5rlNWr1vHn5tK69LmtF7rDsRmBvkrBW09L19lJYb14e9ilTyfdTWHu/kPe13J7K5nxmJw/7ZLBdT5jjMtZGWYGTzgMsPRdPOfevN209skMHKYfOZvWyv3oSOtC5R3E4iiYWi9m0ftCu1AorcrNxThHWnsy3Pc72IP0uxpdy7c6T2qrfzlhbJ0g75WrxgJ3E9aVjZ+fr89li3ZWxzo2g2bLSM7zAF2DgC0Z1RWnCKP1JTa4rjzn0OxPl5kaPyuZ8Vtbrt28ytgUf6ve42tAhrNdqCb8e+e5lBGHn2VVh7S257JyOHdlmbVpPWm6v36IiPmcG09V7IKyrX8rK5lJAlz8/eLV5v6kS2HVKW31nsc8qe5G+VT1uVg8OV9dVtYnmrZmxboZQCf06Y62svpfqXpKg3QlhnWtPeKzbXMfmuEiFD1CmXEWl9ZWojQxIzliHn7uHkodDZKytHJrejJovbaWwW0FFC+vmmbqmPbTxtGlLve1muyJXF4uFJZ0c2tLwWE/63o+w9mooPfVeZ0VNUebQdfr+heO1Pr+wVq/MjlVcAhfTfV4weuTaYfh1vv8Urcs3JJ17N5v1plnWselUv5GxbpAtie7+pjeRDgTJeUHCfrGjwtr4syolaqF1SdwfiFEbC4zS0WzQjUhv4/46TSJ7I6zrLZORtdZe9fJinZxuZHeeawUkw/mmyOLDZ0/adyuDwrqp/1ZbqH5OVv/7KqyHJ7iO9VSfIu9eY+3OvymE1JtbYTQayPJMFZV3m5r1tK270bZsQROv68W5fh8Ro9MMJa327BKJTePOagU7oW3vazOPrrGrIw7cEGk4/8ii50h3hYJr57qpsnePt/5Ym2P1vj2n9q4d4ciGB1Kn7gt2KxeMXgwScDN0LxlzPus8tfNJQ2eYokpBIjyFvWSXFRh4kRy6BGFdrQHirEtWRGr518Wt8o/rp4P+gZjrZw9ebaq1QQ4fPjhcvXctUWLUqyje+pcLTHEvSdAirAGgD440syjCBcudNfQRRfYAvZE8AUn2TTiSQ4dvvUFYJ0Rqyz0CAADksicgyb4JR3Lo8K03COuESG25RwAAgFz2BCTZN+FIDh2+9QZhnRCpLfcIAACQy56AJPsmHMmhw7feIKwTIrXlHgEAAHLZE5Bk34QjOXT41huEdUKkttwjAABALnsCkuybcCSHDt96g7BOiNSWewQAAMhlT0CSfROO5NDhW28Q1gmR2nKPAAAAuewJSLJvwpEcOnzrDcI6IVJb7hEAACCXPQFJ9k04kkOHb71BWCdEass9AgAA5LInIMm+CUdy6PCtNwjrhEhtuUcAAIBc9gQk2TfhSA4dvvUGYZ0QqS33CAAAkMuegCT7JhzJocO33uywsAYAAAAAEEWSoBUkrJOOvzvb7xEAAKCQPQFJ9k04kkOHb71BWMvtEQAAoJA9AUn2TTiSQ4dvvUFYy+0RAACgkD0BSfZNOJJDh2+9QVjL7REAAKCQPQFJ9k04kkOHb71BWMvtEQAAoJA9AUn2TTiSQ4dvvUFYy+0RAACgkD0BSfZNOJJDh2+9QVjL7REAAKCQPQFJ9k04kkOHb71BWMvtEQAAoJA9AUn2TTiSQ4dvvUFYy+0RAACgkD0BSfZNOJJDh2+9QVjL7REAAKCQPQFJ9k04kkOHb71BWMvtEQAAoJA9AUn2TTiSQ4dvvUFYy+0RAACgkD0BSfZNOJJDh2+9QVjfR4+3y+n8MnPtyS7ny9uoY2+X0/bI2+V0anzOT3Y59/Qe76e+0+g++LH7IbucdwQgu5xPVZaXxoZqs91Id9sKnrGbvVfML7PoYN0uQ06GOrfJLue+VpRuvJSfvF1qnamXVeCiVbdr17DtYnNo0hkA+BKRrCQk+yYcyaGL8O3mZLx40/yWXRyov3Z88PjsDiIi7Fu2Oh6NJ6PxZHR0kWUXB+XPSo9vTicHq6wosrOjycjaW9wsRvfpns2uCOuPrx/XKuHFO+dex+Y79agSEECm6vUdmmW3jTjyqLZGuEXhEi5dQk3X1uWP5Q9Zpn7s3Yu2HzWu7Vl4/Pqj1bp1FpSTZnwmXnlpWk4JdvBuo+u+Rdkfq23r4xza0nM6I8bn7dx/hVg91A6ZIW1+bw64Xc6n0/nlbbjt+eVl5BXY2ZTuKAC0xE1Afaa2u9Pl20AThNaQ6xMdzfrciPPWPz3dhd0W1jeL0elN/YsqUksrRfbNibrx6CIzPzi8b9nqeHR6U2QXB6WwPrrIiuzs6PgsK96cTk5uNGF9cqPfEmQXB+Pjk9PjytV7cM9mN4T1uxfNN+Lj68fGV6D6fnwmYV0Ll5AebnRFdjkvdUuS0hggY50g1Ip3L5R/ZD6+flyHVvlRP6Y90DgL7154zkrnzYMaMSVWHmEdNbo2MNnlfNqZq1V9nF9m9XGm555s9wDnS/WwDoEinm3d7AiCdoDZYSBj3ewqt6s3YfaVGxhuKMMN8EUTMQH1nNruTtC3wSaIdy+UY5Q5XsfXrM+NSG8D09Od2Glh/eZ0cnJTKPQbWwAACsdJREFUadM3p2ZK2CGdK41bHuxU4cP4liqss9XxwSqrPBxPTm78QxjCPZtdENa6llZ/q76sj1+8GDJjHadCNYVSywevklClyvLWLSwVeRJWnoq2ivSzW+s1Qs38B67+18+4o1H+UfSdBd8/XFY+2a+/jEqbgLDurCtRPtgRsLpwQqugaCSmM3/u68zcHnu+6jB1XgMR4rU6IE3kKjcfTj/0u50YPwFAITxV32Vquzsh34aaIOwUmRNfsz43Ir29L129y8I6uzgYH59l2dnR5OS0zEDfnIwno6Pjg/Gk0qn2R6rajFZGl0p3WN8ShXVd0HKzGI01Z7LVcarij3HPZheEtYb2Pfv4+nVzr3yPGWstxdlxnKHKml23y3kjM6xsY2GqMS2DaO3yiZVOP31aLaB+mngb/3ApIfechY+vHz9+3Dxsaz7ryNJ6h9T62wSuQ1ibCtrcfLs0hutOGnvF4vK2aaz9ZGcC3l+gH3FduTPW5m63x6qizi7n0+n8MuvQ93qm/HY5nc7n2o2CGTEy1gDpdAnr/lPb3UmYHHtPEB4lbOJv1u1GpLe+6enO7K6wrlPUdTVFyc1CK/kwyC4Oji7OtNx2pXeH9S1NWK8uDsaLNzeLUVkBoqfST1bl/cOQ7tnskLCuS6Ic34F7Fta3S484qhVVo6aVbKNDUSh1upY+1Ld1CDWPWvH6mT6yivbRmfkPl+MfMuMs6E8DP75+/Pj1x2q8XSM06p9vl75XFw0haI+lPEPKAwUzdqk11kV3qUd0KYg/+nGF9mrRd9Op+oOZqtY9a3/Tg9BGqdmuP3Dp5ScAKOxyjXVD/wmi3P8u+O5UXLOaG5HeeqanAdhVYZ1dHBwtTo5UYZ2dHdUvC57e1Ap78cYu/Di6eKOVXgycEm7fXHTY8cGRuxREr/q433crbXZIWNc4irHuV1jfLqfz5dInltT0c1gn1kenahBLDvnzuwE/XYeHNY/2r1W6sDZQT5shPb23Ibp29KtbNQ/te7vQfzOSKqxvl/P5ZSARGyusY86X95VEtRVNWKti2F0DErwGl7dZlll3IOq17Uvw12lx60YRACx2X1jfaYIo82SdNdaRzSaqahtviXcquyqsbxYnN2UOuC4FGR+fZXXtRJap6xu0xR51jXVxsyhT2paiHcK3vi8vnjgqvyejcZ9K6y9AWDv+rblPYV1rDO9yHy6hG8xYK+JD04aNeIzClZv1+Zm+0sjH14+NZwPdj+TCZ0HdGyOsb5eN6lRj406++kdoNdz5PKAV6Gqo27Bml8vL28tGWd/H+Ypo2KyxruNRDW956xLW1Qow7Q5dgpsnog2Vc6ta6u+434ktoAL4EtltYX3nCcJSyNVeba2OF+86mrXcMD/u89Y1ni9aWBdFXcVRa9ObxagurbZfZLSqqJvi5j4F1p2+3WlVkKIgY+3C8f7B1oS1mrrzl+N2rApi5FstpVP9FCid7sxYd/tpf8B7kP1Kd+Eq9DAPsUro7LdG/kfk+mzTWiRqAfOtaWEOLP7FvqCubc6MJqyzy+VlVv3XTUzGOny+6gx84KatSdKb71O2j0+sFH7lWHVQKZCrJpq7B0UtK1XpztPTNHnrXz5yjrgGcLHDwnqoCcIlrE0CzTrdiPQ28t3HdPZFWGdnq5uirvpoKkOa5TVq9Zydnda112WtyP0su5EkrNW0dL29FNbZ2VGfMpVO92x2QVh3v/RwP8JaS8UVRVGKDFMnRGesa/0USpl2HlDieLTf6afHGwvvWyDh1ZQKZzIh7lUVn/7VhbUeaI961WsY9FsYZx8xCWNVWCt6O+5GyLk/8ny1Q1YGb5c5ty8vqo3U9RnN8XUb2eW8rFlvq93nzfrpXd1pIauCoRytjj0rl3SJLjkH+ILYVWF9fxNE0nJ7/RYV8TkzmK7eA2Fd/7I6bpbUKH8+WFX1IJWw1v7qSqNo70W5Vj1mFwdHF2+qahPNWzNj3QyhEvp1xlpZfW9A92x2QlgX2hOerby86C1AbvN89WHz5dKS1g4ZF84j+yunwxnrSD9tfO4Yq+aXqHV03pPgOAtxy/+HhHVzK7FcWrLR8N8xYrV+wxPf7oy1epy60SsYQ0oy7XwpRRtaEtgS1oazzeez26xZIrAJQVst0nxebcsISjhjrbnZjL0+cQhqAA87KqwHnSDUxgKjdDQbdCPS28jpKY29Edb1lsnIWmuvenmxTk43srsotAKS4XxTZPHR4qR9tzIorJv6b7WF6udk9b+vwnp4/D2qr8IFjtD0TGdBrGNBCj03bYsQVVd6NGGkn9YmWaqnK2PtOsQo5vWMRz0tXfU6ClbidzqdOl40tO94gqFNOl+aq84S57aGqJM6T22UVHsa9Wb92y3ea4f0NEAUu6zAwIvk0CUI62oNEGddsiJSy78ubpV/vDkd9A/E3CwOVlm1NsjR8cHRReZaosSoV1G89S8XOIh7LhDWALtMZx15RKE5AGwZyROQZN+EIzl0+NYbhLXcHgEAAArZE5Bk34QjOXT41huEtdweAQAACtkTkGTfhCM5dPjWG4S13B4BAAAK2ROQZN+EIzl0+NYbhLXcHgEAAArZE5Bk34QjOXT41huEtdweAQAACtkTkGTfhCM5dPjWG4S13B4BAAAK2ROQZN+EIzl0+NYbhLXcHgEAAArZE5Bk34QjOXT41huEtdweAQAACtkTkGTfhCM5dPjWG4S13B4BAAAK2ROQZN+EIzl0+NYbhLXcHgEAAArZE5Bk34QjOXT41huEtdweAQAACtkTkGTfhCM5dPjWmx0W1gAAAAAAokgStFKENQAAAADAToOwBgAAAAAYAIQ1AAAAAMAAIKwBAAAAAAYAYQ0AAAAAMAAIawAAAACAAUBYAwAAAAAMAMIaAAAAAGAAENYAAAAAAAOAsAYAAAAAGACENQAAAADAACCsAQAAAAAGAGENAAAAADAACGsAAAAAgAFAWAMAAAAADADCGgAAAABgABDWAAAAAAADgLAGAAAAABgAhDUAAAAAwAAgrAEAAAAABgBhDQAAAAAwAAhrAAAAAIABQFgDAAAAAAwAwhoAAAAAYAAQ1gAAAAAAA4CwBgAAAAAYAIQ1AAAAAMAAIKwBAAAAAAYAYQ0AAAAAMAAIawAAAACAAUBYAwAAAAAMAMIaAAAAAGAA7ktY/+znv/z9H/6lr1cAAAAAALvE7//wL3/9i7/N8zzm4DRh/Z9P/+Gbb6/6OgYAAAAAsEt88+3Vydf/ZXhh/eOPP/6vj//73/z7X/zX//bfyVsDAAAAwB7z+z/8yzffXv2bf/+L//lPv/v06VPMRxKE9U8//fTp06d/+l8f//PpP/zs578cjScYhmEYhmEYtpf217/425Ov/8v/9eGfPn369OOPPw4srBtt/cMPP/zlL3/5/wAAAAAA9pS//OUvP/zww6dPn3766adIqZwmrIui+PHHHz99+pTneZ7nPwAAAAAA7B2l1o3PVfcU1gAAAAAAYIOwBgAAAAAYAIQ1AAAAAMAAIKwBAAAAAAYAYQ0AAAAAMAAIawAAAACAAUBYAwAAAAAMAMIaAAAAAGAAENYAAAAAAAOAsAYAAAAAGACENQAAAADAACCsAQAAAAAGAGENAAAAADAACGsAAAAAgAFAWAMAAAAADADCGgAAAABgABDWAAAAAAADgLAGAAAAABgAhDUAAAAAwAD8/5e8wfpGPsaUAAAAAElFTkSuQmCC" alt="" />

　　上图是后台管理的新闻展示页面，现在删除数据的时候会整个页面刷新一遍，感觉很不友好，理想状态是点击右侧的删除，局部刷新删除这条数据即可。网上这方面的资料还是不多，所以写一篇总结。

　　那么问题来了，局部刷新技术是ajax，用jquery实现ajax更加方便有效，所以先决定使用jquery+ajax完成（最后会介绍一下js的ajax原理）。

　　1）修改删除功能的a链接，修改为<a class='del {$row['id']}' num='{$row['id']}' href='javascript:'>删除</a>，代码如下

php页面如下

<?php
                foreach($pdo->query($sqlNews) as $row){

                    echo "<tr id='tr{$row['id']}'>";
                    echo "<td>{$row['id']}</td>";
                    echo "<td>{$row['title']}</td>";

                    echo "<td>{$row['abstract']}</td>";
                    echo "<td>{$row['level1']}</td>";
                    echo "<td>{$row['level2']}</td>";
                    echo "<td>{$row['level3']}</td>";

                    if($row['shelf']){
                        echo "<td>上墙</td>";
                    }else{
                        echo "<td>下墙</td>";
                    }

                    echo "<td>".date('Y-m-d',$row['regtime'])."</td>";
                    echo "<td><a href='edit.php?id={$row['id']}'>修改</a></td>";
                    // echo "<td><a href='delete.php?id={$row['id']}&image={$row['imgsrc']}'>删除</a></td>";
                    echo "<td><a class='del {$row['id']}' num='{$row['id']}' href='javascript:'>删除</a></td>";
                    echo "</tr>";
                }

　　2)Jquery点击事件响应删除的a链接，具体代码如下

jquery代码如下：

<script type="text/javascript">

     $(function(){
        //按钮单击时执行
        $(".del").click(function(){
              num =$(this).attr('num');
              htmlobj=$.ajax({url:"delete.php?id="+num,async:false});
              if (htmlobj.responseText=="success") {
                   $("#tr"+num).hide();
              }
         });
    });
</script>

　　3）后台响应的代码如下

<?php 

$id=$_GET['id'];
$sqlNews="delete from news where id={$id}";
if($pdo->exec($sqlNews)){
    echo "success";
}else{
    echo "failed";
}
 ?>

　　下面单独介绍一下jquery+ajax  和 js+ajax的小demo

　　1）jquery+ajax 的小demo

<!DOCTYPE html>
<html>
<head>
<meta charset='utf8'>
<script src="jquery.min.js" />

<script>

$(document).ready(function(){
})
</script>

</head>

<body>

<h3 id="test">请点击下面的按钮，通过 jQuery AJAX 改变这段文本。</h3>
<button id="btn1" type="button">获得外部的内容</button>

</body>

<script type="text/javascript">

     $(function(){
        //按钮单击时执行
        $("#btn1").click(function(){

              //取Ajax返回结果
              //为了简单，这里简单地从文件中读取内容作为返回数据
              htmlobj=$.ajax({url:"a.txt",async:false});
               //显示Ajax返回结果
               $("#test").html(htmlobj.responseText);
         });
    });
</script>
</html>

　　2）js+ajax的小demo

<html>
<head>
<meta charset = 'utf-8'>
<script type="text/javascript">
function loadXMLDoc()
{
var xmlhttp;
var txt,x,i;
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState== && xmlhttp.status==)
    {
    xmlDoc=xmlhttp.responseXML;
    txt="";
    x=xmlDoc.getElementsByTagName("title");
    for (i=;i<x.length;i++)
      {
      txt=txt + x[i].childNodes[].nodeValue + "<br />";
      }
    document.getElementById("myDiv").innerHTML=txt;
    }
  }
xmlhttp.open("GET","books.xml",true);
xmlhttp.send();
}
</script>
</head>

<body>

<h2>My Book Collection:</h2>
<div id="myDiv"></div>
<button type="button" onclick="loadXMLDoc()">获得我的图书收藏列表</button>

</body>
</html>